11x32_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Misc 4-hour REI (Restricted Entry Interval)

4-hour REI (Restricted Entry Interval) and can be used in organic and traditional growing

gas chemists

Concentrate your spraying on the stem versus the foliage though

provide improved root aeration and drainage

Green products have a less environmental impact compared to their counterparts on the market

11x32_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Misc 4-hour REI (Restricted Entry Interval)Nordic 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