Description Quick Strap is the tested and recognized water heater bracing system. The QS-120 double-body strap water heater restraint will secure water heaters up to 120 gallons. It is IAPMO listed, State of California accepted and City of Los Angeles approved. The Quick Link® system is fully adjustable from the front of the water heater and eliminates the need to wrap the strap around the back of the heater, creating a quick installation