DAYTON 20UA30 Louver Damper,Adjustable,48H x 48W($1514.99Value)

Description

51 In.H 51 In.W Drnbl Extrd Alu Combo Dmpr, Louver Type Combination, Frame Type Flanged, Outside Height 47 1/2 in, Outside Width 47 1/2 in, Rough Opening Height 48 in, Rough Opening Width 48 in, Louver Maximum Intake 8,014 cfm, Maximum Exhaust...