23_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack botanicare 1 static brush by Harvest

1 static brush by Harvest More to collect pollen

adjust as needed for your specific cultivar and environment

Will not harm beneficials or pollinators

built in timer

Easily diluted with water

23_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack botanicare 1 static brush by HarvestNordic 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