6x12x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack bio soil growers can either pick one

growers can either pick one of the existing Niwa grow recipes or create one themselves

Flanges & completely sealed for maximum cooling capabilities

smooth taste in the finished product and facilitating the uptake of nutrients by the plants

Clean in 5 minutes

SUNMASTER 600W SUPER HPS

6x12x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack bio soil growers can either pick oneNordic Pure Custom MERV 13 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