20x25x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Lighting Accessories -Measures 12" H by 12

-Measures 12" H by 12 1/8" L

These Combos include our T5HO Electronic ballast

Ideal for all water quality testing

Lead to higher yields

Rubber gasket to ensure air tight fitting

20x25x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Lighting Accessories -Measures 12" H by 12Important 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. If you are replacing a 4 3 8 depth 20x25x4 filter