21x21x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack propagation trays Grow NPK: 2 - 1

Grow NPK: 2 - 1 - 5 TOTAL

and people

Nordic Pure 20x24x4 Pleated Air Filters MERV 15 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home

Backed by a 2 year warranty

so save time and money with Quick Snip Trimmer Lubricant

21x21x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack propagation trays Grow NPK: 2 - 1Nordic 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