20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack commercial-lighting-fixture Cool-running capacitors are the key

Cool-running capacitors are the key to long ballast life and continued high light output

Increase the wireless range between Bluelab Connect™ devices and the computer by up to 4x when Connect™ Range Extender 2 is paired with Connect™ Stick 2

#4 Perlite (1/3" - 3/4" granules)

Eden LT will also precisely control HVAC

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

20x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filter 1 Pack commercial-lighting-fixture Cool-running capacitors are the keyImportant 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