universal window air conditioner bracket - 1pc heavy-duty window ac support - support air conditioner up to 160 lbs. - for 12000 btu ac to 20000 btu ac units (hd 1pc acb) (1, heavy duty- one arm) alpine hardware the <b>alpine hardware</b> universal heavy-duty air conditioner support makes air conditioner installation easier, quicker, and safer. <br><br>features: <br>-eliminates the risk of dropping the a/c out of the window during installation. <br>-the ac bracket relieves stress on the window and allows for maximum sturdiness and weight allowance. <br>-works with any brand name air conditioner. <br>-our bracket support eliminates exterior work with no drilling of outside wall or siding. <br>-made of heavy-duty 13 gauge, epoxy-coated steel plate, for a lifetime of use. <br><br> specifications: <br>-fits windows with a minimum width opening of 16"" (1ft 4in) - fits wall thickness from 3"" to 12"". - 17” long x 16” wide a/c resting surface. <br>-the support holds up to 200 lbs - the support will support a/c btu ratings of: 12,000 btu 14,500 btu 16,000 btu 18,000 btu 24,000 btu 28,500 btu 32,000 btu. <br><br>requirements: <br>-window sill must be a minimum of 2 inches deep. <br>-window sill must be able to accept (3) 2.5 inch long screws. <br>-window sill thickness cannot exceed 12 inches <br>-sliding window lip must be no taller than 1 3⁄8 <br>