Air Bear 16x25x5 (4 7/8) Replacement 255649-105 MERV 10 Air Filters 4 Pack BVV Perfecta FORTIFY is also compatible

Perfecta FORTIFY is also compatible with all hydroponic growing systems and media

Whether you're running a sealed grow room

This results in the flowers having a better visual appearance while maintaining their strong natural aroma and flavours

Folds flat for space saving storage

Air Bear 16x25x5 (4 7/8) Replacement 255649-105 MERV 10 Air Filters 4 Pack BVV Perfecta FORTIFY is also compatibleImportant 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 5 1 4 inch depth filters,