20x20x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack Water Heaters Chillers • 5' x 5' wide

• 5' x 5' wide and uniform coverage

• Easy to use monitor that measures pH

8" x 40'' Standard Carbon Air Filter

including especially vigorous strains from the harsh conditions of the Israeli desert

20x20x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack Water Heaters Chillers • 5' x 5' wideImportant 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