JL Industries RSHWB Bolt-On Roof Hatch Safety Railing with Gate

The JL Industries RSHWB is a safety railing that guards the opening left by a roof hatch, made in the USA. It is the bolt-on series, intended for a new hatch installation: it bolts onto the curb counterflashing and does not penetrate the curb, so the roof membrane stays intact. Each kit ships with a self-closing, self-latching gate and is sized to a specific hatch, so order the size that matches yours.

Specifications

Model	RSHWB series, bolt-on
Mounting	Bolts onto the curb counterflashing; does not penetrate the curb
Gate	Self-closing, self-latching, telescoping
Rail height	Bolt holes set the top rail 42 in above the walking surface, the height required by OSHA 1910.29(b)(1) and 2024 IBC 1015.3
Load	200 lb with a maximum 3 in deflection per OSHA; 2024 IBC 1607.9 (ASCE 7)
Material	1-5/8 in x 0.065 in (16 ga) galvanized steel tubing
Finish	Safety yellow powder coat
Country of Origin	USA

Sizes

Fits hatch	Model	Weight
36 x 30 in	RSHWB-1LY	74 lb
36 x 36 in	RSHWB-4LY	77 lb
48 x 48 in	RSHWB-5LY	84 lb

Stair-access sizes and a version for the thermally-broken aluminum hatch are factory orders; ask us for a quote.

Why the opening needs guarding

Under 29 CFR 1910.28(b)(3)(iv), an employee has to be protected from falling into a ladderway hole by a guardrail system with toeboards on the exposed sides, and the entrance to the hole needs a self-closing gate or an offset. The guardrail criteria are in 1910.29. This is OSHA's general-industry rule. For construction work, 29 CFR 1926.501(b)(4) governs holes, and OSHA classifies replacement work as maintenance or construction case by case, by its nature, scale and complexity, not simply because it happens in an existing building. Confirm the final gate or offset configuration with your AHJ before ordering.

Documents and downloads

For specification and installation: the manufacturer's RSHWB safety railing submittal (PDF), RSHWB safety railing installation guide (14I-419) (PDF), roof accessories 3-part specification (Word). Need a project-specific submittal filled out? Send us the project details with a quote request.