Description
Both the earthworm castings and compost increase water retention in sandy soil and improve drainage in clay soils
diluted with at least 100 times amount of water (100-400 gallons/acre)
Also compatible with Gavita 750-1000 watt DE fixtures
This is perfectly safe to use around pets
Adds 2 extra pre-filter stages
16x20x4 (3 5/8) Pleated MERV 10 Air Filters 2 Pack food-storage Both the earthworm castings andImportant 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