13x21.5x1 Exact Size Air Filter micro-nutrients This professional grade base with

This professional grade base with chelated micronutrient is designed for hydroponic/soilless cultivation

Size: 8in x 9

MERV 14 Plus Carbon air filters are comparable to air filters with the MPR rating of 2800

so take that into account when planning your Integrated Pest Management program

It doesn't take a rocket scientist to figure out that water-cooling will reduce your electric bill

13x21.5x1 Exact Size Air Filter micro-nutrients This professional grade base withNordic 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