16x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack CO2 Use ScentGuard to help improve

Use ScentGuard to help improve air quality and reduce energy usage in various treatment systems while also breaking down and alleviating issues with sludge

Based on our patented and patent pending DE Boss Optic design

always confirm compatibility with a jar test and apply to a small section of the crop before mixing and applying large volumes

and 55 gallon drums

Integra Boost 30 Oxygen Scavengers + 1 Oxygen Indicator per barrier bag / 18 bags per box

16x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack CO2 Use ScentGuard to help improveImportant 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