20x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 2 Pack pest control Uses: Indoor

Uses: Indoor

replaceable double junction pH probe and temperature probe (for pH ATC)

conductivity and temperature levels in reservoirs

Unlike synthetic herbicides that can linger in the soil and threaten surrounding plant life through translocation

The plugs are made through an advanced proprietary composting method and contain natural beneficial fungi from this advanced composting biotechnology

20x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 2 Pack pest control Uses: IndoorImportant 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 20x25x4 filter