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

and mandatory conversion labeling to maintain ANSI Z21

replacement springs

eliminating the need for field modifications or generic retrofit kits

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