8x18x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack nutrients and supplements or equipment with top-of-the-line materials

or equipment with top-of-the-line materials

away from direct sunlight and heat sources

Sterile and safe around children and pets

SolarMax grow lamps are designed with the grower in mind

nymphs and adults

8x18x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack nutrients and supplements or equipment with top-of-the-line materialsNordic 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