20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Heaters Chillers just snap on the 2'

just snap on the 2' extension bars* and continue growing

with reasonable maintenance

customer-ready kief

and your final yield

(1) TDZ Multiplying Medium

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 10 Air Filters 1 Pack Water Heaters Chillers just snap on the 2'Important 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,