16_3/8x21_3/8x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack king shredder • Formulated to provide exceptional

• Formulated to provide exceptional drainage and root aeration

square pots

a front exhaust version of this model is available

greenhouse crops

so it is best to be added to solution prior to other nutrients - or diluted before adding to a nutrient solution

16_3/8x21_3/8x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack king shredder • Formulated to provide exceptionalNordic Pure Custom MERV 8 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