BLACK+DECKER BAB-2438 Window Air Conditioner Mounting Support Bracket, Gray

Installs from the inside in just minutes No drilling, tools, hardware, or fasteners required Adjustable for single or double hung window from 24" to 38" wide Note, if your window is flush to the exterior (no exterior sill or ledge), the typical wall thickness is about 4". The A/C Bracket will not work with a flush-mounted window as it requires a minimum wall thickness of 6". Mounting Capacity: 6?-12? wall construction