16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack bio soil • Long lumen maintenance—90% output

• Long lumen maintenance—90% output at 70

lightest and least restrictive carbon filter canister available

first extraction

• Provides rapid knockdown & kill of listed plant pests

and large scale operations alike

16x20x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 2 Pack bio soil • Long lumen maintenance—90% outputImportant 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 16x20x4 filter