17_1/4x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack nutrients-and-supplements however we recommend using the

however we recommend using the FloraCapTM throughout the vegetative phase and this unit primarily in the flower stage

Duct Size 8″

vermiculture hobbyist

including coco coir

17_1/4x23_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack nutrients-and-supplements however we recommend using theNordic 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