Product In Review: 2100 Series Ductwork Drilled (Medium Duty)

Ø12" 2120-8-S Damper

The 2100 series is used for all light & medium duty services by bolting into either existing or new lines with standard “Ductwork Drill” flanges. Various flange sizes available with standard or custom bolt circle patterns. If new construction, companion flanges can be provided upon request. Standard face to face dimension is 6” but custom face to face dimensions can be offered to fit your specific application. Our 2100 series is the standard for your application. Larger sizes than Ø48″ are available upon request. Our 2100 series is mainly supplied in the HVAC industry where it is light enough to fit in most applications but strong enough to outlast the competition.


  • Body, Disc & Flange: Standard – Carbon Steel, Optional – 304
  • Drilling: Ductwork
  • Shaft: Standard – 304 S/S
  • Bushings: Carbon/Graphite
  • Packing Follower: Standard – 304 S/S
  • Stuffing Box Housing: Standard – Carbon Steel, Optional – 304 S/S
  • Maximum Operating Temperature: Carbon Steel – 750°F, 304 SS – 1000°F
  • Maximum Static Pressure: 20 PSIG. at ambient
  • Maximum Shut-Off Pressure Drop: 1 PSI. Std.
2100 Series Diagram

Ø12" 2120-8-S Damper

The ductwork drilled damper allows for rolled angle ring flanges that offer sturdy construction while providing a cost-effective solution. The light to medium duty construction allows additional price savings to all industries for a broad range of applications. Our quick lead times are an additional benefit to our 2100 series Dampers.


The ductwork drilled medium duty damper has been used in various industries but mainly supplied in the HVAC industry along with glass production, pharmaceutical, automotive manufacturing and food processing.

Pharmaceutical Industry

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