63 In.H-W 12.8 In.L Squ Alu Mtrzd Cntrl Dampr, For Nominal Duct Diameter Not Applicable, Damper Application Motorized, Number of Panels 2, Overall Height 63 in, Overall Length 12 3/4 in, Rough Opening Shape Square, For Duct Shape Square, Overall...
63 In.H-W 12.8 In.L Squ Alu Mtrzd Cntrl Dampr, For Nominal Duct Diameter Not Applicable, Damper Application Motorized, Number of Panels 2, Overall Height 63 in, Overall Length 12 3/4 in, Rough Opening Shape Square, For Duct Shape Square, Overall...