Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 4 Pack Led Ionic Bloom for Soil contains

Ionic Bloom for Soil contains the highest quality minerals and is powerfully enriched with naturally occurring plant acids that increase overall nutrient uptake and enhance growth and yields of virtually every plant

devices like fans or pumps can be controlled based on time rather than Temperature

push-button calibration with auto buffer recognition

top-grade BPA-free black plastic

the AS35FP complements non-forced air heating sources and other specialty heating systems

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 4 Pack Led Ionic Bloom for Soil containsImportant 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,