Air Bear 20x25x5 (4 7/8) Replacement 259112-102 MERV 12 Air Filters 1 Pack DUCTWORK Increase the longevity and effectiveness

Increase the longevity and effectiveness of your aging tools by investing in quality replacement parts

4% blue light from CMH lamps is slightly higher than a 50/50 mix of HPS and MH lamps

Field growers should apply Z7 at first planting and whenever possible thereafter

Sunshine #4 Natural & Organic

Features platinum TDS/EC sensor and thermister

Air Bear 20x25x5 (4 7/8) Replacement 259112-102 MERV 12 Air Filters 1 Pack DUCTWORK Increase the longevity and effectivenessImportant 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,