This fan has a 12" and 14" flange so it wiill work on both a 12" and 14" carbon filter or 12" or 14" Ducting
Typical bubble buckets designs have failed to fully address the need for complete bucket and reservoir circulation
Applications include hydroponics
CalCarb is a unique form of a simple and very common compound that contains both calcium and carbon
20x24x1 Pleated MERV 14 Air Filters 6 Pack Garden Accessories This fan has a 12"Nordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.