Protect people from uneven walkways and mezzanine drop-off's. The safety railing is constructed of schedule 10 steel. All models have an outside pipe diameter of 1-5/8". Handrails are 42" high with a 21" mid-rail. Mounting options include socket sleeves, cast steel base, barricade base, or cast steel sockets for convenient handrail removal. The cast steel sockets accept wood 2" x 4" or 2" x 6" when toe boards are required. Two (2) lag down holes are pre-drilled for permanently mounting the railing. The steel design includes a baked-in powder-coated finish, which is available in a variety of colors found in the table below. The VDKR series safety rail products comply with U.S. Occupational Safety and Health Administration (OSHA) General Industry requirements for guardrail systems in 29 CFR 1910.29.