ZD Series, Parallel Blade Zone Damper Extruded Aluminum, Volts: 24, Hertz: 60, Amp:8, Brand Model Compatibility: Truezone Electronic Zoning Systems, Damper Type: Zone Dampers, Material: Extruded Aluminum, Style Name: ZD Series, Temperature Range: 40 To 140 Deg F, Vent Duct Shape: Rectangular, Dims:H:8"W:10"L:14" Weight: 65Lbs, In Mfg Box, Made in USA