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High-Pressure Tolerance: Rated for up to 25 PSI
a critical requirement for many late-model condensing units
making it versatile for various electrical configurations found in multi-family residential and hospitality ventilation systems
For technicians running high-demand boiler rooms
Lennox 11J12 Pressure Switch 328140-751 High-Pressure Tolerance: Rated for upEnsure your combustion air system is operating within manufacturer parameters with the Lennox 11J12 Pressure Switch. This critical safety component is a high altitude specific differential switch designed for Lennox furnace repair and maintenance, featuring a factory set . 85" WC pressure switch actuation point. Engineering for precise draft proving, this part monitors the static pressure within the inducer housing to confirm proper venting before
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