14x20x1 Pleated MERV 13 Air Filters 3 Pack lighting-accessories Max-Duct is the strongest duct

Max-Duct is the strongest duct on the market and with a cost similar to the leading competitors' 3 ply ducting

Easily control run times and power output with one simple unit

Product Highlights Mogul base: E39

up to 8x stronger than General Hydroponics

• MERV 11 Filter for Superior Equipment Protection

14x20x1 Pleated MERV 13 Air Filters 3 Pack lighting-accessories Max-Duct is the strongest ductNordic Pure MERV 13 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 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200