Air conditioner supports transfer the weight of the air conditioner from the window sash and sill to the support and window frame. Constructed for long service life, made of epoxy-coated steel with stainless steel hardware, nylon fixtures, and neoprene rubber mounting pads. Air conditioner supports ensure a more secure installation with minimal chance of damage to the window, window parts, or outside wall. Fits wall thickness 4" to 11". Easy indoor installation eliminates all exterior work. 2 year limited warranty. White.