Have your own motors? 

RetroZone™ Round Dampers are available with no motors installed.  Whether you want to add motors later, or have your own motors,  now you can have our best-in-industry damper cans for your installation. These dampers feature the finest construction and parts in the industry, and will not crack, come apart, have blades fall off or leak through seams like lesser quality dampers.

Many accessories are available under “Damper Accessories” including manual adjustment handles!

Check these features: 

*Heavy 22 gauge construction with 18 gauge blades. 

*Welded, leak proof seams-not riveted. 

*Duro Dyne® commercial 1/2 inch drive shafts 

*Duro Dyne® Bronze Bearings with anti rattle washers

*Bolted on blades with 3/16 hardware-Blades will not vibrate off!

Specifications: 

3 inch damper is 5.5 inches long

Dampers  4 to 12 inches in diameter = 9 inches long

Dampers 14 to 18 inches in diameter = 12 inches long 

Features offset shafts allowing room for most motors

Includes pre-cut urethane blade seals; shipped loose

Need an anti-rotation bracket (often supplied with new motors)? Available under damper accessories. 

Standard 3.5" shaft extends 2" outside the damper. Extended 6" shaft extends 4" outside the damper.

Optional locking quadrant handle can be added for manual balancing dampers.