20x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Terp Derp Suggested Uses: For control and

Suggested Uses: For control and prevention of major fungal pathogens and resultant diseases on greenhouse and nursery vegetables

stacking can’t change its structure

Also contains non-plant food ingredients

or vines to trellis when used with the special binding twine

20x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Terp Derp Suggested Uses: For control andNordic 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