216416 Thermwell ACB160H Heavy Duty, Steel Universal Air Conditioner Support, Installs Completely From Inside, Supports Up To 160 LB Or 12,000 To 24,000 BTUs, Safe Easy To Install, Secure Long Lasting, Precision Bubble Level, Assures Proper Mounting Angle, Relieves Stress On Window, Rugged, All Weather Construction, 2 Year Limited Warranty.