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SCD-57 Commercial Rectangular
Mechanical Dampers

Starting at $259.00

SCD-57 Internal Mount Mechanical Damper

Starting at $259.00 with motor / starting at $159.00 without motor. These dampers can be built to virtually any size you need!

SCD- 57 series Internal or Side Mount Rectangular Mechanical Dampers, Heavy duty galvanized, Aluminum, or Stainless Steel Construction.  Call factory for pricing and information, as many options are available, including:

Opposed Blade construction

Parallel “Shutter” blade construction available

Available with no motor

Available with many Belimo Motor and other brand motors

Very Low Leakage Options include stainless steel jamb and blade seals

Standard delivery 3 weeks, 3 day expedited service available

Rugged commercial series galvanized, aluminum or stainless steel dampers at great prices!  These dampers feature a standard 5" wide galvanized frame and blade system with quality bronze commercial linkages, and many options. 

The SCD-57 Series commercial dampers feature extra rigid damper housings.  

The construction of this ultra heavy duty damper prevents jamming or binding, even if installed in warped duct.  Heavy duty low leakage seal kits are are available on the SCD-57 series, including stainless steel side wiper seals for ultra low leakage. 

Application: Use on a system up to 4" static pressure.

Motors: Buy without motors, or with full line Belimo Motors


Application: Use on a system up to 4" static pressure.

Commercial Damper Questions:

Don’t worry if you don’t have all the info, we can do a preliminary quote if we get some basic information:

1. Motor and voltage, 3 wire or 2 wire? 24vac or 110vac? Open close operation or 4 to 20ma or 2 to 10 volts DC modulated?

2. Application: What will it be doing? We may have ideas…

3. Parallel or opposed blade? Opposed blade for most applications unless outside location where blades need to shed rain.

4. Blade and Jamb seals for ultra low leakage?

5. Motor location: Long side, short side or internal mount? (long side width N/A)

6. Need an end plate to slide damper into duct? (IT option)

7. Size: width = ? x Height = ? Use width as the first number, height as the second. Motor can only go on the height side, or as an internal mount. Motor cannot go on width side (i.e. bottom mount).

8. Should we build to actual OD dimensions above, or undersize 1/4 inch in both dimensions so it will fit in the duct easier?

9. How soon do you need the part? Commercial dampers can take two weeks to build, but reasonable expedite services are available.





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