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Expands to 2 cu ft with water
Coco fiber adds air pockets within your grow media
a built-in tool bag
these fans move air in a coherent horizontal pattern creating a gentle 'racetrack' air flow pattern needed in greenhouses to maximize heat distribution and humidity control by mixing the air
21x21x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack lighting-accessories Expands to 2 cu ftNordic 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
US$ 29.00
US$ 18.99
US$ 11.95
