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and other supportive wire/tie
which plants need to promote heavier yields and additional UV light to facilitate terpine and resin production as this is a plant’s natural response to protect itself from UV radiation
* All hardware made of SS304 Stainless Steel
20 times the B1 of other popular PK boosters plus serious amounts of B2
11_1/2x11_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Grow Tents and other supportive wire/tieNordic Pure Custom MERV 13 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