6x12x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Garden Hygiene and Safety applications should be made in

applications should be made in the late evening and on plants that are not blooming

Maintain control over temperature and ambient air

Seed starting tray and dome

Do not use as a wetting agent

Overall tool length measures 22

6x12x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Garden Hygiene and Safety applications should be made inNordic 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