20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Heaters Chillers tightly securing its connection to

tightly securing its connection to the booster duct fan

750W and 600W

customer-ready kief

* Ambient to 100 Degrees C

INTERLOCK OFF: When the DCC-1 interlock is set to be off

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Heaters Chillers tightly securing its connection toImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,