Lennox 21Z11 Smoke Detector kit 323613-751 Industrial Build: Sleeve bearing design

Industrial Build: Sleeve bearing design provides quiet operation and longevity in low-temperature refrigeration applications

Durable Construction: UL listed and designed to provide professional-grade reliability in commercial HVAC applications

maintaining system up-time and operational safety for commercial and residential plumbing applications

this blade resists corrosion and fatigue

For a York motor replacement

Lennox 21Z11 Smoke Detector kit 323613-751 Industrial Build: Sleeve bearing designThe Lennox 21Z11 is a professional grade duct smoke detector kit engineered for seamless integration with commercial and light commercial air handling units. This HVAC smoke detection kit is critical for life safety compliance, providing rapid identification of combustion particulates within the supply or return air streams. Designed specifically for Lennox equipment, the 21Z11 interfaces directly with HVAC safety circuits and system control boards to