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5” x 18” sleeved material column
Charcoal-based carbon filter loaded with 30 lbs bituminous charcoal
running 12 hours per day with both VEG and BLOOM switches during the flowering and fruiting stages
When it comes to picking fruits and vegetables
which creates sugars
11_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Environmental Controllers 5” x 18” sleeved materialNordic 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
