AC Support Bracket. 18-16 Gauge Steel. Installing a window air conditioner is not an easy task being large, heavy and downright awkward. The task, however, can be made easier with the Black and Decker bracket, which Installs from inside the house in minutes and safely, and conveniently, supports up to 200 pounds. There is no drilling, no tools, no fasteners and no hardware included. It's that easy. BULLETS: Works with single or double hung windows from 24" to 38" wide....Safe, durable and convenient.....Made of heavy gauge steel.