17_1/2x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_hf from seed to bloom to

from seed to bloom to harvest

growers will experience an optimal air to water ratio

releasing a measured amount of carbon dioxide

(1) Aerating Water Pump

Uses: Indoor

17_1/2x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack spl_hf from seed to bloom toNordic 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