16_1/2x21_5/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack grow-light-reflectors Just swap the tumbler out

Just swap the tumbler out and keep running

30 x PotPro™ | Platform

Castings are a source of over 60 micronutrients and trace minerals

Low Grain Refrigerant Technology (VLGR patent pending) to deliver maximum performance and efficiency throughout the grow cycle

16_1/2x21_5/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack grow-light-reflectors Just swap the tumbler outNordic Pure Custom MERV 10 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