16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack Lighting & Electrical Components The black base prevents light

The black base prevents light penetration to the root zone and reduces the chance of root disease

and your plant retains its weight and potency

get Blite MINI w/Remote today

Please note—meter not included as shown in image

Sclerotinia sclerotiorumand Monilinia spp

16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack Lighting & Electrical Components The black base prevents lightImportant 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