The Round Take-Off Damper is a combination adhesive take-off collar and motorized damper. The RT has three models for each different motor. The RTP is our exclusive plug-in damper motor which includes 25′ of modular cord and is used with only the plug-in zoning panels. The RTM is the 24V. power open-closed, three wire motor, also used as a motorized by-pass. The RTS is the 24V spring return motor. All dampers operate as the RD dampers above except are in a take-off collar. The adhesive seal provides and air tight seal to the duct to eliminate leakage.