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Industrial Build Quality: Constructed with materials resistant to thermal fatigue in commercial heating zones
A standout feature for any technician is the integral vent limiting orifice
ensuring the gas valve slams shut if no flame is detected
Sterling HVAC Compatibility: Verified fit for Sterling and Beacon Morris HSB/HBB series unit heaters
It is specifically compatible with Belimo AF and NF series spring return actuators
Lennox 64L81 Air Flapper Els PW 17895 Industrial Build Quality: Constructed withThe Lennox 64L81 Air Flapper Kit (LB 98453B) represents a critical component for maintaining the combustion integrity of legacy Lennox Pulse series furnaces. This genuine OEM replacement kit, containing 10 individual 3 5 8" OD diaphragms, is engineered to handle the unique pressure dynamics of Lennox G14 and G21 units. As a veteran grade air diaphragm kit, these flappers regulate airflow within the combustion chamber, opening and closing in rapid