23_1/4x29_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_centurionpro This layer blocks harmful rays

This layer blocks harmful rays from breaking down your plant’s organic matter and causing loss of potency during long-term storage

RadidRIZE blocks with super-fast expansion

commercial row crops

Adjustment Range 3

Bag of dry compressed wafers of worm castings and coco coir

23_1/4x29_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_centurionpro This layer blocks harmful raysNordic Pure Custom MERV 14 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