15_1/4x15_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Nutriants This OMRI listed biostimulant is

This OMRI listed biostimulant is a patented blend of naturally occurring soil bacteria and a wood extract (a forestry by-product)

and as a hydroponic medium

Unit Weight (Full) - 24

A heavy duty

15_1/4x15_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Nutriants This OMRI listed biostimulant isNordic Pure Custom MERV 10 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition