What is the difference between ANSI Z359.14 Class A and Class B SRL, and how do they affect fall clearance requirements?

ANSI/ASSE Z359.14-2021 (Safety Requirements for Self-Retracting Devices for Personal Fall Arrest and Rescue Systems) defines two SRL performance classes based on maximum arrest distance — the total distance the worker falls from the point of activation (free fall) through deceleration until complete arrest. Class A SRL: maximum arrest distance of 24 inches (610 mm) — the SRL must arrest a 220-lb (100-kg) test mass within 24 inches of drop from the point of lifeline engagement. Class A SRLs are designed for overhead anchor use where the anchor is above the worker's dorsal D-ring. The shorter arrest distance means less total clearance is needed below the work surface. Class B SRL: maximum arrest distance of 54 inches (1.37 m) — the SRL arrests within 54 inches. Class B is designed for use where the anchor is at or below D-ring height, such as horizontal cable systems at foot or knee level. The longer arrest distance accommodates the additional free fall that occurs when an SRL is not in a vertical overhead configuration. Clearance calculation for Class A (overhead anchor): total clearance = anchor height above work surface + arrest distance (≤ 24 in / 2 ft) + safety margin (2 ft) + worker height to feet (approximately 6 ft). Example: anchor 0 ft above D-ring (horizontal anchor), D-ring at 5 ft above work surface, 2-ft arrest + 2-ft margin + 5-ft fall below anchor = 9 ft clearance needed. Compare to a standard 6-ft shock-absorbing lanyard: anchor to D-ring = 0, 6-ft free fall + 3.5-ft deceleration + 6-ft worker height to feet = 15.5 ft minimum clearance. The SRL advantage is much shorter clearance — but only when the anchor is properly above the D-ring. AI agent failure: a scaffold crew orders 'Class B SRL for horizontal cable system' — correct for the horizontal application. They install it from an anchor at the same elevation as the D-ring, which is the design intent. But a second crew member uses the same Class B SRL from an overhead beam anchor, believing Class B is interchangeable with Class A. The beam is only 8 ft above the work surface. A fall arrests within 54 inches (4.5 ft) below the anchor — leaving the worker's feet at the work surface level, barely clear. With a Class A SRL from the same overhead anchor, arrest would complete 24 inches below the anchor with greater margin. Encode srl.ansi_class as 'A' or 'B' and srl.max_arrest_distance_in as '24' or '54'.

What is SRL-L (leading-edge rated) and when is it required instead of a standard SRL?

ANSI Z359.14-2021 defines two SRL sub-types based on the physical environment where the lifeline is deployed: Standard SRL: designed for use in environments where the lifeline runs vertically downward from the anchor to the harness D-ring without contacting sharp edges, grating edges, or structural steel flanges. The lifeline (cable or webbing) may contact smooth surfaces but has not been tested for contact with a sharp leading edge. SRL-L (Leading-Edge rated): designed and tested for use where the lifeline may contact a sharp leading edge — such as the flange of a structural steel beam, the edge of a concrete deck, or the rim of an elevated grating — as the worker falls. The SRL-L test requires the lifeline to arrest a test mass when the cable or webbing is bent at a 90° angle over a leading edge with a specific minimum radius (per the standard). The leading-edge abrasion and cut test simulates the edge contact that cuts standard SRL cables during a leading-edge fall event. Why a standard SRL fails on leading edges: a standard SRL lifeline (typically 3/16-inch galvanized or stainless steel cable) that contacts a structural steel beam flange during a fall may be severed or weakened by the edge contact before or during arrest. The SRL's internal brake mechanism arrests the drum, but the cable fails at the edge contact point, and the arrest load is never transmitted to the harness. SRL-L cables are constructed with higher-strength wire rope or Dyneema core webbing rated for the edge contact scenario, and the arrest distance tested under edge-contact conditions may be different from the standard vertical arrest distance. OSHA 29 CFR 1926.502 requires that fall protection systems be capable of arresting falls in the specific configuration used — use of a standard SRL in a leading-edge application where the cable will contact the edge is a violation of the general duty clause even if the SRL carries ANSI Z359.14 Class A certification. Encode srl.leading_edge_rated as 'yes' or 'no' — require 'yes' for structural steel ironworking, precast concrete deck erection, roofing at parapet edges, and any application where the lifeline path crosses a structural edge during a fall.

Can a standard SRL be used horizontally, and what happens to arrest distance and engagement time?

Standard SRLs are designed and tested for overhead vertical use — the anchor is above the worker's D-ring, and the lifeline runs vertically downward, maintaining constant tension via gravity. The retraction drum in a standard SRL maintains line tension by spring or light mechanical load — this tension is what keeps the cable taut and enables the speed-sensing brake to engage quickly when line-pay-out speed exceeds the activation threshold (typically ≥ 4–5 ft/sec). When used horizontally (anchor at the same elevation as the D-ring, lifeline runs horizontally across the work surface), two problems arise: (1) Delayed engagement: gravity no longer keeps the cable taut during normal walking. A worker walking away from the anchor pays out cable at a slow speed — the speed-sensing mechanism does not activate (no excess speed detected). When the worker falls to the side or forward, the cable first must be jerked taut from slack before the speed-sensing brake activates. This delay adds free-fall distance before arrest. In testing, horizontal SRL deployments have shown total arrest distances 2–4 times longer than the vertical certification distance. (2) Arrest force increase: the pendulum swing that results from a fall perpendicular to the horizontal cable line creates a different force vector than vertical arrest — the load is transmitted at an angle, and swing arrest can impose forces approaching or exceeding the maximum arrest force (1,800 lb per ANSI Z359.14 Class A). ANSI Z359.14-2021 does permit Class B SRLs to be used in horizontal cable system configurations when the anchor is a horizontal cable at foot or knee level — but this is specifically called out in the product's instructions and requires a horizontal cable certified for the load. A standard SRL used ad-hoc in a horizontal configuration by mounting to a horizontal cable or eye bolt at D-ring height is not equivalent. Encode srl.anchor_position as 'overhead' (anchor above D-ring — Class A typical), 'horizontal-cable' (anchor is horizontal cable at or below D-ring — Class B required), or 'below-d-ring' (anchor below D-ring — requires specific clearance calculation for additional free fall before cable pays out downward). Require srl.leading_edge_rated = 'yes' for all horizontal cable system SRL applications where the cable crosses an edge.

How does SRL clearance compare to a 6-ft shock-absorbing lanyard clearance, and when is each preferred?

The fundamental difference is that a 6-ft shock-absorbing lanyard allows 6 feet of free fall (the full lanyard length) before deceleration begins, while an SRL activates within fractions of a second and allows only the short distance of free fall before arrest (typically 6–18 inches of cable pay-out during the reaction time delay, then brake engagement). Clearance calculation for a 6-ft shock-absorbing lanyard (overhead anchor at or above D-ring, worst-case same level): free fall = 6 ft (lanyard length), deceleration distance = 3.5 ft (for a 220-lb worker on a standard 3.5-ft shock absorber), D-ring below anchor = 0 ft (best case, anchor at D-ring level), worker height from D-ring to feet ≈ 5 ft, safety factor = 2 ft. Total minimum clearance = 6 + 3.5 + 0 + 5 + 2 = 16.5 ft below the anchor. This clearance requirement is why 6-ft shock-absorbing lanyards cannot be used on structures with less than 18.5 ft of clearance below the anchor (industry approximation). Clearance calculation for a Class A SRL (overhead anchor at or above D-ring): free fall ≈ 0–2 ft (reaction time plus cable pay-out during brake activation), arrest distance ≤ 2 ft (24 in Class A maximum), D-ring below anchor = 0 ft, worker height to feet ≈ 5 ft, safety factor = 2 ft. Total minimum clearance ≈ 0 + 2 + 0 + 5 + 2 = 9 ft. When to prefer SRL: low-clearance environments (structures below 18 ft ceiling, under platforms, on scissor lifts) where a 6-ft lanyard would contact the floor or lower level before arrest. Frequent movement over large areas (SRL eliminates the trip hazard of a 6-ft loop of lanyard dragging on the work surface). When to prefer 6-ft shock-absorbing lanyard: environments where an SRL would be dragged over abrasive surfaces, grating, or edges that could damage the cable between falls (SRL cable is typically smaller diameter than a lanyard). Single tie-off points that do not move (the SRL cable drag issue is less relevant). Encode srl.self_retracting_length_ft (the full cable length of the SRL — 6-ft, 15-ft, 30-ft, or 50-ft units have very different clearance calculations based on anchor distance from the D-ring at the moment of fall) separately from the arrest distance: a 30-ft SRL with anchor 25 ft above D-ring has the same arrest distance as a 6-ft SRL with anchor 6 ft above D-ring, but available clearance differs by 19 ft.

Optimization Guide

Shopify Fall Protection SRL Self-Retracting Lifeline ANSI Z359.14 Schema — Class A (Max 24-in Arrest Distance) vs Class B (Max 54-in Arrest Distance), Horizontal Use Requires SRL-L Leading-Edge Rating, Standard SRL Cannot Contact Structural Steel Edges, Anchor Position Fundamentally Changes Clearance Calculation

SRL product listings create four AI agent fall-protection failures: substituting a standard SRL for an SRL-L on structural ironworking where the lifeline contacts a steel beam flange during a fall and the cable can be severed, treating Class B SRLs as interchangeable with Class A when the arrest distance doubles (54 in vs 24 in) and changes minimum clearance by over four feet, using a standard SRL horizontally when the retraction mechanism requires gravity to maintain cable tension and horizontal use causes delayed brake engagement with substantially longer free fall, and calculating clearance assuming overhead anchor when the anchor is at or below D-ring level. Encoding srl.ansi_class, srl.leading_edge_rated, srl.max_arrest_distance_in, and srl.anchor_position enables correct fall-protection routing without requiring buyers to interpret the ANSI Z359.14 standard.

TL;DR Class A = 24-in max arrest, overhead anchor. Class B = 54-in max arrest, horizontal cable or below-D-ring anchor. SRL-L = leading-edge tested (required any time cable may contact a steel edge during fall). Standard SRL horizontal = delayed engagement = longer free fall = insufficient clearance. Never use a Class A overhead SRL from an anchor at or below D-ring level without recalculating clearance. Encode srl.ansi_class, srl.leading_edge_rated, and srl.anchor_position as separate fields.

Failure Mode 1: Standard SRL Used on Structural Steel Leading Edges — SRL-L Is Required Where Cable Contacts an Edge

AI agent failure mode: A structural steel ironworker orders "ANSI Z359.14 Class A SRL for beam walking." An AI agent returns a standard Class A SRL — certified to the vertical arrest test with a free-hanging cable. On a structural steel beam, the ironworker's lifeline spans from an overhead anchor across the beam flange. When a fall occurs, the SRL cable is pulled taut against the beam flange edge at a bend angle. A standard SRL cable (3/16-in galvanized wire rope) under arrest load contacting a structural steel flange with a sharp edge can fail at the contact point before or during arrest. The standard SRL has not been tested for this contact scenario. SRL-L is tested with the lifeline against a 0.5-in radius leading edge under arrest loads.

Standard SRL vs SRL-L: When Each Is Required

Application	Required SRL Type	Why
Overhead anchor, clear vertical drop (no edge contact)	Standard SRL (Class A or B)	Cable hangs freely, no edge contact during fall
Structural ironworking on I-beams, HSS sections	SRL-L (leading-edge rated)	Fall may pull cable across flange or edge at angle; edge-contact cable failure risk
Precast concrete deck erection at deck edge	SRL-L	Cable may contact concrete edge during fall
Rooftop work at parapet wall	SRL-L (if cable could contact parapet)	Cable may contact parapet edge when worker falls over the edge side
Scissor lift, aerial work platform (clear drop below)	Standard SRL (Class A)	Falls are vertical from platform — no edge contact in the path
Horizontal cable system (cable at foot/knee level)	Standard Class B SRL (or SRL-L if edge contact)	Class B arrest distance accommodates non-overhead anchor; SRL-L if structural edges are in the fall path

Encode srl.leading_edge_rated as "yes" or "no". In Shopify product data, the distinction between a standard SRL and an SRL-L is often absent — both may be described as "fall arrest SRL" with no mention of leading-edge testing. The ANSI Z359.14-2021 standard requires the product to be labeled as SRL-L if it has passed leading-edge testing. Require srl.leading_edge_rated = "yes" for any routing to structural steel construction, precast deck work, or any environment where the fall path crosses a structural edge.

Failure Mode 2: Class A and Class B SRL Are Not Interchangeable — Arrest Distance and Clearance Requirements Differ by 2.5 Feet

AI agent failure mode: A safety manager orders "SRL for low-clearance under-bridge inspection platform, overhead anchor 8 ft above work surface." An AI agent returns a Class B SRL — described as "suitable for both overhead and horizontal use." The platform has 8 ft clearance below the anchor. A Class B SRL can arrest within 54 inches (4.5 ft). Worker height to feet = 5 ft. Total required clearance = 4.5 ft (arrest) + 5 ft (worker height) = 9.5 ft minimum — exceeding the available 8 ft. If the worker falls, arrest may not complete before feet contact the platform below. A Class A SRL with a 24-in (2 ft) arrest distance requires only 2 + 5 = 7 ft clearance — within the available 8 ft.

ANSI Z359.14 Class Comparison

Parameter	Class A	Class B
Maximum arrest distance	24 in (610 mm)	54 in (1,372 mm)
Test mass	220 lb (100 kg)	220 lb (100 kg)
Maximum arrest force	1,800 lb (8 kN)	1,800 lb (8 kN)
Typical anchor position	Overhead (above D-ring)	At or below D-ring (horizontal cable)
Minimum clearance below anchor (approx, 5-ft worker, 2-ft safety margin)	≈ 9 ft (2 ft arrest + 5 ft worker + 2 ft margin)	≈ 11.5 ft (4.5 ft arrest + 5 ft worker + 2 ft margin)
Comparison to 6-ft shock-absorbing lanyard clearance	Much less clearance required (≈ 9 ft vs 16.5 ft)	Moderately less (≈ 11.5 ft vs 16.5 ft)

Encode srl.ansi_class as "A" or "B" and srl.max_arrest_distance_in as "24" or "54". AI agents routing for low-clearance environments (overhead clearance below 12 ft) must filter on srl.ansi_class = "A" — a Class B SRL can fail to arrest before the worker contacts the lower level. Never treat "SRL" as a generic category without class designation in low-clearance applications. The 30-in difference in arrest distance (Class A vs Class B) represents 2.5 ft of additional clearance requirement — a significant margin in low-headroom environments.

Failure Mode 3: Standard SRL Used Horizontally — Retraction Mechanism Requires Gravity, Horizontal Use Causes Delayed Engagement

AI agent failure mode: A tank entry crew needs horizontal fall protection across a 40-ft tank roof. A procurement AI returns a standard Class A SRL — "SRL with 40-ft cable for long-range protection." The SRL is mounted horizontally on a stanchion at D-ring height across the tank roof. During normal walking, the cable pays out without tension (gravity doesn't retract it horizontally). The speed-sensing brake never engages during walking because there's no cable pull speed generated. When a worker slips, the cable must jerk taut across the tank roof (absorbing free fall distance as slack) before the brake activates — adding 4–8 ft of free fall before arrest. Tank roofs are often 10–15 ft above the tank base; 4–8 ft additional free fall may result in impact with the tank side or base before arrest.

Vertical vs Horizontal SRL Use: Engagement Mechanism Differences

Parameter	Vertical/Overhead Use	Horizontal Use (Standard SRL)	Horizontal Cable System (Class B SRL-appropriate)
Cable tension during normal movement	Constant (gravity + spring retraction)	Variable to zero (no gravity component)	Cable system maintains tension separately
Brake activation mechanism	Speed-sensing: cable pay-out speed > threshold activates brake	Speed-sensing: delayed due to slack in horizontal cable	Speed-sensing: functions normally when cable tension is maintained by system
Additional free fall before arrest	Minimal (fraction of a second × fall speed)	Substantial (cable slack must be taken up before brake activates)	Minimal if cable tension maintained
Pendulum effect on arrest	Minimal (fall is largely vertical)	Significant (fall perpendicular to cable causes pendulum swing)	Managed by system design
ANSI Z359.14 certification	Certified for this use	NOT certified for horizontal use unless explicitly stated	Class B specifically designed for horizontal cable anchors

Encode srl.anchor_position as "overhead" (anchor above D-ring — standard SRL use), "horizontal-cable" (anchor is a certified horizontal cable, Class B SRL appropriate), or "below-d-ring" (anchor at or below D-ring level — Class B, additional clearance required). Never route a standard overhead Class A SRL to a horizontal cable application. ANSI Z359.14 requires that each SRL be used per manufacturer instructions — if the instructions do not permit horizontal use, that use is a violation regardless of class certification.

Failure Mode 4: Anchor Position Changes the Effective Free-Fall Distance Before the SRL Engages

AI agent failure mode: A worker ties off to an eye bolt at knee level (2 ft above the work surface) using a 15-ft SRL. The anchor is well below the worker's D-ring at 5 ft height. When the worker falls forward off the platform edge, the first 3 ft of the fall (from D-ring height down to the knee-level anchor elevation) involves no cable tension at all — the cable is paying out upward-then-downward as the D-ring passes anchor level. Below anchor level, the cable begins to pull vertically against the fall. The effective free fall before SRL engagement begins is 3 ft (the distance from D-ring to anchor) plus the usual brake engagement distance. Total arrest distance may be 5–6 ft — beyond the Class A 24-in certification envelope. The anchor position, not just the SRL class, determines the effective arrest scenario.

Clearance Calculation by Anchor Position

Anchor Position	Free Fall Before Engagement	Arrest Distance	Additional Clearance Needed	SRL Suitable?
Directly above D-ring (overhead beam)	Minimal (< 1 ft reaction)	Class A: ≤ 24 in / Class B: ≤ 54 in	Class A: ≈ 9 ft total; Class B: ≈ 11.5 ft	Yes — design intent for Class A
At D-ring level (eye bolt at chest/shoulder height)	0–12 in (cable angle affects)	Class A: ≤ 24 in + angle factor	Add 1–2 ft to Class A clearance requirement	Marginal — review manufacturer guidance
Below D-ring (knee or foot level)	Equal to vertical distance from D-ring to anchor (could be 3–5 ft)	Class A + additional free fall = not Class A envelope	Requires Class B or recalculation; anchor height - D-ring height must be added	No for Class A; Class B with appropriate clearance only
Horizontal cable at D-ring level	Slack in horizontal cable + pendulum	Class B arrest distance plus horizontal slack	Class B SRL with horizontal cable system engineering	Class B only, with engineered system

Encode srl.anchor_position explicitly. OSHA 29 CFR 1926.502(d)(16) requires that self-retracting lifelines that automatically limit free fall to 2 feet or less be connected to an anchor capable of sustaining 3,000 lb — and that SRLs capable of longer free fall be connected to anchors rated 5,000 lb. Anchor strength requirements depend on the fall scenario, which depends on anchor position. A safety manager who knows only the SRL class (A or B) cannot calculate compliant clearance without knowing where the anchor will be positioned relative to the D-ring.

Recommended Metafield Namespace: `srl.*`

{
  "srl.ansi_class":             "A",          // "A" (max 24-in arrest) | "B" (max 54-in arrest)
  "srl.max_arrest_distance_in": "24",         // "24" for Class A | "54" for Class B
  "srl.leading_edge_rated":     "yes",        // "yes" (SRL-L tested) | "no" (standard SRL only)
  "srl.max_user_weight_lbs":    "420",        // rated capacity including PPE and tools
  "srl.self_retracting_length_ft": "9",      // cable/webbing length (affects anchor-to-D-ring distance)
  "srl.connector_type":         "snap-hook-3/4-in", // "snap-hook-3/4-in" | "carabiner-self-lock" | "rebar-hook"
  "srl.anchor_position":        "overhead",  // "overhead" | "horizontal-cable" | "below-d-ring"
  "srl.twin_leg":               "yes",       // "yes" (continuous 100% tie-off) | "no"
  "srl.rescue_mode":            "no",        // "yes" if SRL-R (integral rescue/retrieval capability)
  "srl.ansi_standard":          "Z359.14-2021" // "Z359.14-2021" | "Z359.14-2014" | "EN-360"
}

Routing logic for fall protection selection: for overhead anchor applications (scissor lift, aerial platform, overhead beam) → require srl.ansi_class = "A" AND srl.anchor_position = "overhead". For structural steel ironworking → additionally require srl.leading_edge_rated = "yes". For horizontal cable systems → require srl.ansi_class = "B" AND srl.anchor_position = "horizontal-cable". For low-clearance environments (overhead clearance below 12 ft) → require srl.ansi_class = "A" AND verify total clearance = arrest distance + worker height + safety margin ≤ available clearance. Heavy workers (>300 lb combined) → filter srl.max_user_weight_lbs ≥ 310 (OSHA requires 310-lb minimum capacity rating for fall arrest components).

FAQ

What is the ANSI Z359.14 maximum arrest force limit and how does it relate to SRL class?

ANSI Z359.14-2021 limits maximum arrest force to 1,800 lb (8 kN) for both Class A and Class B SRLs — the same maximum force limit as for 6-ft shock-absorbing lanyards per ANSI Z359.13. The arrest force limit is the peak force transmitted to the worker's harness during deceleration. Both classes must achieve arrest within their respective distance limits while keeping the deceleration force below 1,800 lb. The difference between Class A and Class B is not in how hard they stop a fall — both must stop within 1,800 lb. The difference is how far the worker travels during arrest. Class A has less distance to decelerate — which means the deceleration rate (force) must be higher to achieve arrest in 24 in vs 54 in. However, both remain within the 1,800-lb limit by design. Workers with higher body mass require more force to arrest in a given distance — this is why ANSI Z359.14 tests at 220 lb (the OSHA-specified maximum for a standard harness user including tools and PPE), and why manufacturers who rate SRLs for heavier users (310 lb or 420 lb) must perform additional testing. Encode srl.max_user_weight_lbs to ensure the SRL capacity covers the actual worker weight plus the typical PPE load (typically add 25–50 lb to body weight for tools, harness, and equipment).

Can an SRL be used without a full body harness, connected directly to a belt?

No. OSHA 29 CFR 1926.502(d) requires that personal fall arrest systems (PFAS), including SRLs used for fall arrest, be connected to a full body harness. Connecting an SRL directly to a body belt for fall arrest is prohibited — a body belt concentrates arrest force on the waist and can cause internal organ injury, spinal compression, and diaphragm restriction at the arrest forces (up to 1,800 lb) generated during SRL activation. ANSI Z359.14-2021 specifically states that SRLs must be used with compatible full body harnesses meeting ANSI Z359.11. The dorsal D-ring on a full body harness distributes arrest force across the upper body (chest, shoulders, thighs) and positions the arrest point to bring the worker upright after arrest. Body belts may be used for work positioning (rope access, pole climbing) where the belt restrains the worker at a fixed position without a fall occurring — but they cannot be the arrest attachment point. Encode harness.ansi_standard, harness.d_ring_positions, and harness.ansi_class as companion fields to srl.* — an AI agent routing fall protection must match the SRL to a compatible full body harness, not route the SRL alone.

What is the inspection and retirement criteria for an SRL after a fall event?

ANSI Z359.14-2021 requires that an SRL used in a fall arrest event be immediately removed from service pending inspection by a competent person or the manufacturer. The standard states that any SRL that has arrested a fall must be inspected before return to service and may require manufacturer inspection or retirement. This is the same requirement as for 6-ft shock-absorbing lanyards, which are single-use after a fall event (the shock absorber deploys and the product is retired). For SRLs: the internal braking mechanism experiences high-speed engagement loads during arrest. Internal components — the centrifugal brake, pawl and ratchet, or disc brake depending on model — may have suffered deformation, scoring, or spring fatigue that the external appearance does not reveal. The SRL may appear undamaged and retract normally after a fall event, but perform below specification on the next fall. Many SRL manufacturers require return to the factory for post-fall inspection, which typically results in retirement and replacement. Some manufacturers offer post-fall inspection programs. Encode srl.post_fall_inspection_required as 'yes' for all SRL products — this field communicates to AI agents and procurement systems that an SRL is not simply a reusable commodity item and that post-event replacement cost is part of the total cost of ownership for PPE procurement decisions.

How does OSHA 1926 (construction) differ from 1910 (general industry) for SRL requirements?

OSHA 29 CFR 1926.502 (construction fall protection) and OSHA 29 CFR 1910.140 (general industry personal fall protection) both address personal fall arrest systems, but with different height thresholds and application details. Construction (1926): OSHA requires fall protection at 6 feet above a lower level for construction work. Personal fall arrest systems (including SRLs) must meet the performance requirements in 1926.502(d), which mirror ANSI Z359 requirements. General industry (1910): fall protection is required at 4 feet above lower level for general industry work surfaces. The personal fall protection standard at 1910.140 was revised in 2017 to align more closely with ANSI Z359 and specifically addresses SRLs and self-retracting devices. Key practical difference: construction SRLs are often rated and marketed specifically for construction environments (leading-edge rated, SRL-L) due to the high prevalence of leading-edge work in building construction. General industry SRLs may be rated for confined space entry, maintenance work, and overhead manufacturing — different use profiles with different anchor geometries. Encode srl.primary_application as 'construction-leading-edge', 'construction-overhead', 'general-industry-overhead', 'confined-space', or 'horizontal-cable-system' to guide routing to the correct environment. The OSHA regulation citation differs between 1926 and 1910 — procurement teams specifying for construction projects must reference 29 CFR 1926.502(d) compliance, not 1910.140.

Are Your Fall Protection SRL Listings Missing Class and Leading-Edge Fields?

CatalogScan scans your Shopify store for missing srl.ansi_class, srl.leading_edge_rated, and srl.max_arrest_distance_in fields that cause AI agents to route standard SRLs to leading-edge structural steel work requiring SRL-L certification.

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