Starting Collars with Damper Blade

ModelSize (inch/mm)
QSM-SCWD-1004/100
QSM-SCWD-1506/150
QSM-SCWD-2008/200
QSM-SCWD-25010/250
QSM-SCWD-30012/300
QSM-SCWD-35014/350
QSM-SCWD-40016/400
QSM-SCWD-45018/450
QSM-SCWD-50020/500
The LinkedAir starting collars with damper are made out of galvanised steel and designed for balancing the system manually. 
It used for connection of round duct to square Sheet Metal duct, Pre-Insulated (Phenolic) Duct, Sheet Metal Boxes or Pre-Insulated (Phenolic) box.
Custom sizes are available upon request.
QSM-SCWD