16_3/8x21_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack dis This amino acid based product

This amino acid based product tricks the plant into thinking it's heat stressed

Bountea Cal-Mag provides 2% Nitrogen

tree holes

Highly Concentrated - no fillers

000 ft) models of each

16_3/8x21_3/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack dis This amino acid based productNordic Pure Custom MERV 12 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