20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 1 Pack MH Works with: EX-100

Works with: EX-100

Features a speed controller utilizing PWM which can control the fan's speed without generating noise

Up to four fans can share the same USB power source

High quality silver anodized aluminum finish for maximum protection

It contains a high level of natural nutrition that caters to the whole spectrum of plants needs

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement  MERV 8 Pleated Plus Carbon 1 Pack MH Works with: EX-100Important 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,