18_1/4x22x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack refurbished-products One case of (8) GC

One case of (8) GC 30 makes 240 gallons of full-strength disinfection solution (100 ppm)

- Reduce the need for fungicides

this bag will allow to pick longer in comfort

making your plants healthy and hardy

- Everything you need to control a small indoor facility

18_1/4x22x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack refurbished-products One case of (8) GCNordic 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