20x25x5 1/4 (5.25) Goodman/Carrier/Amana Replacement MERV 12 Air Filters 1 Pack fans-ventilation-ducting Enables uniform and faster growth

Enables uniform and faster growth

meaning that it is acidic and potentially corrosive

Use with any type of seeds

The high calcium content of Neptune's' Harvest Crab and Lobster Shell reduces the effects of fungal diseases such as blossom end rot and helps plants develop healthy

20x25x5 1/4 (5.25) Goodman/Carrier/Amana Replacement MERV 12 Air Filters 1 Pack fans-ventilation-ducting Enables uniform and faster growthImportant 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. We also carry 4 3 8 and 4 7 8 inch depth filters,