20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 1 Pack vacuum pump These saucers feature true inside-diameter

These saucers feature true inside-diameter sizes

humidity control is critical

creating a continuous grow space when interlocked and maximizing your square footage

and customized silver coating and secret stitching designs for increased light proof ability

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 1 Pack vacuum pump These saucers feature true inside-diameterImportant 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,