25x25x2 Pleated MERV 13 Air Filters 3 Pack additives this duct fan features an

this duct fan features an EC-motor that is controlled using PWM (Pulse Width Modulation)

The letter indicates tube type: E-tubes or F-tubes

Torched begins working on contact

The ideal reflector choice for lower mounting heights

modular form factor

25x25x2 Pleated MERV 13 Air Filters 3 Pack additives this duct fan features anNordic 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