16x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 2 Pack DUCTWORK The Maximum you can link

The Maximum you can link up is 2 VA1000's

and properly insulated

Fruit Borer Caterpillar

No Bulb Replacements

16x20x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 2 Pack DUCTWORK The Maximum you can linkImportant 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