20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 13 Air Filters 4 Pack bloom Through the years of testing

Through the years of testing and research

The egg crate foam muffles sound vibration while allowing maximum airflow passthrough for both intake and exhaust configurations

How does Sluggo kill slugs and snails

increasing efficacy of cleaning agent or crop protection product

7mm (8” x 5

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 13 Air Filters 4 Pack bloom Through the years of testingImportant 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,