Three Aprilaire Whole-House Air Cleaners Models: 2200/2250/2400
Traps 98% of visible airborne dust and other large particles
97% efficiency for particles larger than five (5) microns
Permanently captures at least 97% of airborne pollen-sized particles
Uses no electricity
The disposable filter media lasts one to two years; no other maintenance is required
Provides more than 30 times the filtering media used in standard 1" furnace filters
Equipped with over 72 square feet of filtering media that actually improves in efficiency over time
Because these models have no moving parts, they produce no ozone and are FILEly maintenance-free
Carry a 5-year limited warranty on parts from the date of installation

Model 2200: The Model 2200 is easily adaptable to upflow or horizontal duct configurations.

Model 2400: The Model 2400 is compact, great for use with today's shorter furnaces in platform or closet installations. Model 2250: The Model 2250 is a grille-mount air cleaner and can be attached to roof-mounted, slab-mounted, attic or closet air-conditioning units.