20x20x4 (3 5/8) Pleated MERV 10 Air Filters 2 Pack LED Lighting Polyetherimide (PEI) body with spherical

Polyetherimide (PEI) body with spherical tip for use in moderately aggressive liquids

Root weevil (Diaprepes abbreviates)

Foxglove Aphid

and it also features an internal clock with a back up battery to maintain accurate timing even in the event of a power outage

Housing: IP-67 Waterproof (submersible

20x20x4 (3 5/8) Pleated MERV 10 Air Filters 2 Pack LED Lighting Polyetherimide (PEI) body with sphericalImportant 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