Lennox 59436 Air Filter 323269-701 System Security: An internal keypad

System Security: An internal keypad lockout switch prevents unauthorized setpoint tampering by end-users

Precision Threading: Features a 1/8" MPT base below the hex for secure integration into manifolds and equipment housings

providing the necessary low-voltage power supply for integrated boiler control boards and secondary circuits

ensuring the correct wattage and pull-in force to prevent valve sticking or intermittent failure

replacement springs

Lennox 59436 Air Filter 323269-701 System Security: An internal keypadThe Lennox 59436 Air Filter is a heavy duty 20x25x1 washable air filter designed specifically for demanding commercial and industrial HVACR environments. Engineered for precision fitment in Lennox economizer sections and rooftop units, this OEM replacement filter (also cataloged as Lennox P 8 7831) utilizes a washable foam or aluminum mesh media to provide high efficiency pre filtration. Its synthetic material construction is optimized for a MERV 10