All steel construction Welded support brackets The hardware kit for our jackknife furniture is a complete package that offers two “U” shaped support bars made of 1” wide steel square tubing. The supports (which attach directly to the unit are 1/4" thick and are connected to the tubing with 1/4"firm fillet welds making it one solid piece. There are multiple access points to attach the supports to the furniture and the furniture to the flooring. Details: Dimensions – 11” H (overall height) Dimensions – 1” W (support bar width overall) Dimensions – 20” D (front to back) Dimensions – 2 3/4" L (upper supports) Dimensions – 1 1/2" W (upper supports) Dimensions – 12” L (mounting holes – center point to center point) Color – Brushed black All steel construction Sold as a pair Welded support brackets Hardware Package: (3) supports (8) washers (4) bolts (4) nuts (8) screws (12) screws