Specifications: Joist Rider Curb shall be Model JR6096 (or 6060; 7296; 7272) as manufactured by Plasteco, Inc., Houston, TX (800-231-6117; toll free fax 877-231-6117). The curb shall be 14" high and formed of 16 gauge steel. The interior of the curb and fall protection grill shall be powder coated white. The curb shall have a treated 2 x 4 wood nailer and 1-1/2" thick R-10 rigid closed cell polyiscocyanurate foam coreboard. The curb shall have a minimum 4" flange on all four sides. The Joist Rider Curb shall have a fall protection grill consisting of 1/2" diameter steel bars welded at each intersection of a nominal 6" x 6" grid. The 6" x 6" steel grid provides compliance to OSHA Regulation 29 CFR 1910.501 ÒDuty to have fall protectionÓ.