Air Bear 16x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 1 Pack pest-and-disease-control Ionic PK Boost delivers the

Ionic PK Boost delivers the key mineral elements phosphorus (P) and potassium (K) in a pure form that is instantly accessible to the plant

Filter replacements available with simple and economical annual self-service

UtiLite interlocking wall and ceiling panels are ideal for indoor grow facilities

and heating/cooling transfer applications

HumTea Brewball Including 5-gallon HumTea Brewkit

Air Bear 16x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 1 Pack pest-and-disease-control Ionic PK Boost delivers theImportant 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,