17_1/8x34_7/8x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Fertilizer 9 LPH Flow Rate

9 LPH Flow Rate

It has a C

Improves photosynthetic efficiency and nutrient usage efficiecy

which is important for healthy clones

• The best single light source

17_1/8x34_7/8x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Fertilizer 9 LPH Flow RateNordic Pure Custom MERV 8 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