17_1/4x29_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack pots urea and seaweed intended for

urea and seaweed intended for use on food crops

🔋 Long Battery Life: Runs on 2 AAA batteries (included) with up to 500 hours of testing time

• 3/4” NPT thread fits in-line mounting

6 mil non-woven poly permits 90% light transmission

mixed-flow and centrifugal ventilation fans

17_1/4x29_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack pots urea and seaweed intended forNordic Pure Custom MERV 13 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