18x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack sprayers-and-wands lowering grow area temperature and

lowering grow area temperature and allowing closer placement of the Sunburst to the canopy if desired

Box Dimensions: 5

CES pH Down™

and weed density

An incredibly high diversity of microorganisms

18x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack sprayers-and-wands lowering grow area temperature andNordic Pure Custom MERV 12 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