20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 6 Pack Hydro Systems Zenport QZ411 Narrow Head Professional

Zenport QZ411 Narrow Head Professional Pruner

and PCBs (organic chlorine)

Growers who want the very best work with TerraVesco

Weight: 331 pounds

Botanicare Ebb & Flow Fill/Drain Screen Fitting

20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 6 Pack Hydro Systems Zenport QZ411 Narrow Head ProfessionalImportant 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