22x24_1/4x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-light-ballasts 3LB Seabird Guano is the

3LB Seabird Guano is the ultimate dry organic bloom booster

Nordic Pure 20x20x4 Plus Carbon Air Filters MERV 13 are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home

-Displays weight in grams

and are formulated with the perfect nutrient ratios for exceptional vegetative growth and blooms

22x24_1/4x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack grow-light-ballasts 3LB Seabird Guano is theNordic Pure Custom MERV 14 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