Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 14 Plus Carbon 2 Pack shoe-cover Features built-in rubber stoppers that

Features built-in rubber stoppers that dampen slamming vent blades and ensure complete blockage

optimum air exchange and high cation exchange capacity (CEC) plus coarse perlite for amplified root zone aeration

containing CNC machined aluminum frames with a modern brushed black finish

Allows existing customers to upgrade to T4 Rails or T2 Triple or T2 Quad Rails

in an indoor grow

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 14 Plus Carbon 2 Pack shoe-cover Features built-in rubber stoppers thatImportant 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,