This is a Carrier Blower housing, removed from an Infinity furnace, It has these part #s on the housing. Right side panel-319315-404, Left side panel-319315-403, Wrapper-319816-404, Baffle 319820-301. Measures: 20 1/2″ x 14″ x 15 1/2. Inlet is 10 1/2 ” in Diameter, Outlet is 17″ x 13 1/4″, Outlet with included 319820-301 baffel is 8 1/2″ x13 1/4.