16x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 1 Pack Lamps Dimensions: 4’x8’x4’11”

Dimensions: 4’x8’x4’11”

and Rust Mite (Eriophyidae)

Silicic acid is much more readily available to plants than other forms of silica

unlimited Zones

Also in the cartridge are six proprietary ingredients included as food sources that are all specific to within one tenth of a gram

16x20x4 (3 5/8) Pleated Air Filters MERV 14 Plus Carbon 1 Pack Lamps Dimensions: 4’x8’x4’11”Important 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