This NCHRP-350 certified barricade meets MUTCD standards. Impact resistant polypropylene with special additive is weather resistant in extreme conditions. Made of 30% recycled material. Accomodates up to two 2" x 8" x 6' or 2" x 8" x 8' plastic rails. barricade can be type 1 (one rail) or type 2 (2 rails). Rails are re-inforced to prevent bowing in hot weather conditions. Rails come with engineer grade sheeting applied on both sides. A-Frame legs can be put together with hinge pin (included) to use as a sign stand.