13x21_3/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hw Total Capacity – 1L

Total Capacity – 1L

Water and nutrients travel down a 1 GPH torturous path

NOTE: Grow1 sensors DO NOT WORK with GROW1 weather stations

The Ideal-Air Supreme Silver/Black Flex Ducting is a high-quality

straight blade pruning saw with sheath

13x21_3/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hw Total Capacity – 1LNordic 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