20x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Gardening Accessories Perfect for the small hobbyist

Perfect for the small hobbyist or someone looking to see how amazing our nitro nutrients are

Elastic top for snug

top it with a 4” FloraCap® and you are ready to hand feed

| Exhaust: Front | Airflow: 160 CFM | Noise: 24 dBA | Bearings: Dual Ball

and equalize the osmotic differential in soil and soilless media by mediating more uniform moisture distribution

20x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Gardening Accessories Perfect for the small hobbyistNordic Pure Custom MERV 7 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