16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 1 Pack hydro-systems Internal resin coating protects components

Internal resin coating protects components for long life

Package Dimensions:              275mm(L) x 164mm(W) x 62mm(H)

Designed exclusively for Hydrofarm by America's foremost lighting design engineers

Made of galvanized steel for maximum resistance to rust and corrosion

It allows the grower to adjust the humidity levels to best suit the stage of growth using its four adjustable vents

16x20x4 (3 5/8) Pleated Air Filters MERV 15 Plus Carbon 1 Pack hydro-systems Internal resin coating protects componentsImportant 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