30x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack plant-support Made from high-quality hard plastic

Made from high-quality hard plastic and built to last

Phat filters remove the strongest and most potent plant odors

Chinch Bugs (Blissidae)

The yellow LED indicator shows CO2 level equal or above 800ppm which means supplemental CO2 is in use

If accidental contact occurs with desirable plants or skin

30x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack plant-support Made from high-quality hard plasticNordic 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