21_1/2x23_5/16x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack misc Darkling Beetles (lesser meal worm)

Darkling Beetles (lesser meal worm)

Ferocious is a nutrient enhancer and should NOT be used as a replacement for nutrients

Data logs direct to your computer via wireless connection with Bluelab Connect Stick

Each workstation has 5 different sized holes to provide versatility and improve processing capacity

21_1/2x23_5/16x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack misc Darkling Beetles (lesser meal worm)Nordic Pure Custom MERV 7 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