A/C safe supports transfer the weight of the air conditioner from the window sash and sill to the support and window frame. The result is a more secure installation with minimal chance of damage to the window, window parts or outside wall. Constructed for long service life. Heavy-gauge, epoxy-coated steel with stainless steel hardware, nylon fixtures and neoprene rubber mounting pads. Exclusive bubble level sets proper angle for condensate run-off. Fits wall thickness from 4 in. to 11 in. Includes all necessary hardware. Two-year limited warranty.