25x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films We are proud to bring

We are proud to bring you the first FloraFlex Nutrient line: an easy to use two part powder formula for both the Vegetative and Bloom stages

2100 μmol/s 1000W HPS lamp

Not all meters will read identically

6mm inlet- 4 larger holes than 1

and no negative or positive air pressure interference

25x28x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films We are proud to bringNordic Pure Custom MERV 7 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