20x20x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack Water Heaters Chillers 8" x 40'' Standard Carbon

8" x 40'' Standard Carbon Air Filter

• Main Line: #1 - 300 MCM

• 5' x 5' wide and uniform coverage

with driver and thermometer and suspending accessories

• Easy to use monitor that measures pH

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack Water Heaters Chillers 8" x 40'' Standard CarbonImportant 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 20x20x4 filter