GeneralAire 4545 Perfect Platform High Efficiency Media Air Cleaner

MERV 11 Opti-Fiber Media with low pressure drop characteristics. 22 Gauge, galvanized cabinet with metal door. 75% minimum average efficiency 1.0 to 3.0 microns. 28" Wide X 43" Long X 14 1/2" Tall. Replacement Media: 6FM2025 (GFI #4551 - MERV 11) or 5FM2025 (GFI #4501 - MERV 10). (Change every 6 Months) . Adjustable inlet duct opening; 10" or 12" x 26 1/2". Furnace opening adjusts from 19" or 22 1/2" x 26 1/2". Solid cabinet. Made to fit 1.3 or 3.5 ton electric air handlers or gas furnaces. Prevents dust, pet hair, insects, rodents, water or sewer backup from entering furnce. Space saving. Two pull-out doors allow easy access for filter changes. http://www.generalfilters.com/cm/dpl/downloads/products/922/Perfect_Platform_Installation_Manual.pdf Specifications Discounted at only: US$ 279.38