20_1/2x25_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack complete-systems Please note that this product

Please note that this product will increase the PPM (parts per million) of your nutrient solution

Vermicrop built on that base with their core humic ingredients: VermiGreen (thermophilic compost)

Size: 15''x20''

Please follow these battery care tips to get the longest life and best performance out of them

20_1/2x25_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack complete-systems Please note that this 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