13x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs sanitation work

sanitation work

and enjoy added benefits of mycorrhizae (a beneficial fungi species that promotes root growth and enhances fertilizer uptake)

• Water resistant design

commercial base nutrient formulated specifically for mother plants

2 x 1/2“ End Cap

13x23x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-systems-trays-reservoirs sanitation workNordic Pure Custom MERV 14 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