4 Sets: Versatile Outdoor Wall Mounting Bracket for Ductless Mini Split Heat Pump Systems Adjustable to fit 9,000 BTU – 36,000 BTU units with a maximum weight of 550 lbs. Vibration control and shock absorbers are built-in. Adjustable backstops. Foldable design with all necessary hardware included. Dimensions: 21.6 × 17.7 × 33.4 in.