The Frost King Air Conditioner Support Bracket is a must-have item when installing a window air conditioning unit. The Frost King Air Conditioner Bracket safely supports AC units up to 80 lbs (ACB80H) or 160 lbs(ACB160H).This universal air conditioner window bracket is secure and durable. A properly installed air conditioner window bracket will relieve the stress that an air conditioner places on your window.