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The Lennox 16x25x5 nominal housing requires a precise actual fit of 15 3/4" x 24 3/4" x 4 3/8" to prevent air bypass
including the 398AAV and 398AAW series
Key Benefits Precision Balanced Aluminum: The 3-blade design reduces vibration and noise
providing an essential high-limit cutout that prevents the heat pump or furnace from operating under unsafe thermal conditions
Laars Heating Systems R0013200 Pressure Switch 340793-762 The Lennox 16x25x5 nominal housingThe Laars Heating Systems R0013200 Pressure Switch is a critical safety component designed specifically for residential and commercial pool and spa heaters. This 2 PSI pressure switch operates on an SPST (Single Pole Single Throw) circuit, serving as the primary sensor to ensure adequate water flow before allowing the burner to ignite. Built by TecMark, this part features a compression connection and a robust brass adapter for seamless integration