13x23x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack tents-&-tarps Redeveloped with a Botanicare low

Redeveloped with a Botanicare low profile reservoir

or edible grow rooms

Integrated sensor for better application flexibility

regular application of Soluble Seaweed Extract will enable you to reap the benefits of the power powder from the sea

13x23x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack tents-&-tarps Redeveloped with a Botanicare lowNordic Pure Custom MERV 8 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