20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack commercial-lighting-fixture The Xtrasun ballast in this

The Xtrasun ballast in this combo is our classic workhorse magnetic ballast

• Unit uses cold inlet water to temper the canister water tempering the drain water temperature below 140˚F to protect PVC piping and condensation pumps

Here’s a convenient three-pack: Big Bloom

With scuba gear air tight zippers and a fully water proof material the only thing getting in this bag is you when you unzip it

20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack commercial-lighting-fixture The Xtrasun ballast in thisImportant 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 20x20x4 filter