Copyright RetroZone inc.2020

Retrozone SD Slip in Dampers

Starting at $110.69

With Free Domestic shipping

At RetroZone, retrofit damper applications is our specialty! Also see our award winning "Flexdamper" retrofit damper systems if you need more than just a few retrofit dampers. Slip in dampers allow you to install a damper but just cutting a simple slot in the bottom of a duct-No need to cut out an entire section. Retrozone's Slip In Series of Retrofit Slip in Dampers allows easy damper retrofit to sheet metal ducts that are already installed, where it would be difficult to cut out a complete length of pipe to install a traditional mechanical damper.

To install, just cut out a strip of metal about 1 inch wide by the length of the blade, slip in the damper, and secure using sheetmetal screws. Using tin snips or other sheetmetal tools cut a slot about 1 inch wide, and seven inches long, then just insert the damper and screw into place.

Tech Tip: Where to use Slip In motorized dampers VS Flexdamper Air Actuated Retrofit dampers:

A. Consider Flexdampers whenever you have more than two dampers per zone due to lower cost.

B. Use Flexdampers wherever you have poor access to the outside of the duct. Also, while it is never recommended to sheet rock over, or limit future accessibility to any moving part that may need service, if you must, then use Flexdampers. Like any air powered device, the pump and air switching components are in the mechanical room, for easy service.

D. All other Applications, Slip In dampers will work great for you.

Slip-In Dampers from RetroZone:




SD Super Duty Slip In (Slide In ) Dampers with the Belimo LMB24-3-T Motor-Available in all standard sizes between 6 and 12 inches any other of our fine Belimo Motors.


Available in all standard sizes between 5 and 12 inches: 5,6,7,8,9,10, and 12. The SD Slip In damper gives you commercial grade quality in the most heavy duty slip in damper available, at a competitive price. Powered by the highly acclaimed Be limo LMB series motors, these gear train motors are so power efficient that a single standard 40va Transformer can power 20 dampers.

No Plastic-all quality galvanized steel with bronze bushings and other heavy duty hardware.

*five year warranty

*Draws only 2VA or 1.5 watts of intermittent power with a 90 second actuation time-cool running!

*Use up to twenty SD Super Duty Slip in dampers from a single 40Va 24volt ac transformer. Use up to 37 Slip in dampers with a single 75va 24volt AC transformer, no extra power transformers or isolation relay boards are needed for multiple damper applications.

SD Super Duty Slip In (Slide In ) Dampers

SecurityMetrics for PCI Compliance, QSA, IDS, Penetration Testing, Forensics, and Vulnerability Assessment