TUNE-R-B is a control damper designed for use in round ducts. It features a plastic manual controller and has a low tightness class. It is used to provide effective air volume regulation in the duct system. The special construction of the TUNE-R-B makes it easy to fix the air volume in the required position without having to use any other tool. The damper is manufactured from galvanised steel sheet. The damper can also be manufactured from stainless steel if required using order codes A-304 or A-316. The Plastic bushings are made from a PPO material.

TUNE-R-B is available in a range of different diameter options ranging from 100 to 315 mm. The control damper can operate up to a maximum allowed temperature of 80°C. The maximum duct pressure in which it can operate is 500 Pa. Shut-off dampers and dampers with a higher tightness class are available in the TUNE-R catalogue.