The Babcock-Davis OSHA compliant Safety Railing is ideal for new and retrofit applications. The safety railing mounts to the existing smoke vent curb counterflash without penetrating the membrane. Features OSHA Compliant Fall Protection Optional Four-Sided Rails Easy Field Installation Specifications Model BSRVAY Material Rails and Posts, aluminum, 1-1/4 inch ID (1.66 inch OD) Schedule 40 pipe A53 Grade B Finish Safety Yellow Powder Coat Fittings Cast aluminum alloy with set screw hold Mounting Brackets 3/16 inch steel, zinc plated with a patented nut backing plate Hardware Hex head bolts 3/8 inch - 16 x 3/4 inch zinc plated steel Compliance OSHA 29 CFR 1910.28 and 1910.29 requirements for fall protection; supports 200lbs force Warranty Five (5) years Sizes Industry standard and custom sizes available Order Guide BASE WIDTH X LENGTH BSRVAY X NN Standard Sizes (in.) 36 x 30 36 x 36 48 x 48 48 x 96 60 x 96 60 x 120 60 x 144 72 x 144