The JL Industries Aluminum Roof Hatch RHDA-4 ( RHA-4 ) 36 in. x 36 in. Mill Finish from Industrial Hardware and Specialties is designed to provide roof access from the interior of the building from a normal ladder, step ladder or stairs. The Model RHDA-4 ( Replaces RHA-4 ) has a 12" high curb made from 11 gauge aluminum and 3 1/2" wide flange around the base for securing to roof deck. The cover includes a 11 gauge aluminum exterior and 18 gauge aluminum liner with a TPE draft seal gasket door seal. The hardware includes a heavy duty clear zinc-plated steel pintle hinge, a compression operated heavy gauge automatic hold open arm with a shock absorbing cylinder, and red vinyl grip. While the locking mechanisms consist of a Clear zinc-plated steel slam latch with inside and outside handles and padlock hasps.Order today from Industrial Hardware and Specialties.
- RHDA models include components or materials that are ASTM certified under Specifications 209-06 and C726-05
- 110 mph wind load when cover is in an open position
- Wide flange makes connections to roof deck faster and easier
Certifications: none
Load/Deflection: tested to support a live load of 40psf, and to 50psf wind uplift.
Insulation: 1” polyisocyanurate in curb and cover with thermal resistance R-6.
Construction: Curb: Single wall curb and counterflashing with Diamond Grip to secure the roof membrane without tools. Fabricated from 11 gauge aluminum. Features a continuous, weatherproof EPDM sponge rubber adhesive-backed gasket.
Hardware: Heavy-duty clear zinc-plated steel pintle hinge, clear zinc-plated steel slam latch with inside and outside handles and padlock hasps. Clear zinc-plated automatic locking hold-open arm with red vinyl grip for one-handed door operation.
Finish: mill finish