Duro Dyne® DuroZone Zone Damper, Series: RD, RD-12 Model, 12 in Size, 610 cu-ft/min at 940 ft/min, Single Blade, 24 ga, Steel, Galvanized, High-Torque Motor, Motor Specification: 24 V, Round, 14 in L

• Housing and blade made of galvanized steel with reinforced beads for maximum durability
• Motor will work with all existing 24 V thermostats, high-torque means reliable, trouble-free service for many years
• Insures smooth operation and efficient sealing for maximum control of air flow
• Damper attaches to duct by use of nylon ties or screws, easy wiring, no screwdriver required
• Designed for use with flexible ducting or round duct
• Damper motor guaranteed for three-years after installation

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/Duro_Dyne_35043_Catalog.pdf