28 Gauge Dampers

0 of 5 stars


1/4” (6.4 mm) bearings allow bearing holes to be made in round duct with the use of a scratch awl. Squeeze pipe so that it is oval shaped. Insert damper into pre-punched bearing hole(s). Pipe will spring back to round when released. Secure with wing nut(s) provided. Damper may be adjusted with screwdriver or optional damper handle. Available with or without handles.

Malco Dampers are designed for forced air systems, they are not capable of being used in wood, coal, or other similar systems.

Made In USA


Catalog # Description Pipe Diameter Bearing
Standard Dampers with Wingnuts Included, 28 Gauge (0.48 mm) Unassembled
D5100 5 in. (127 mm) Single
D6100 6 in. (152 mm) Single
D6HT100 6 in. (152 mm) Double
D7HT100 7 in. (178 mm) Double
D8HT100 8 in. (203 mm) Double
Standard Dampers with Wingnuts Included, 28 Gauge (0.48 mm) Pre-assembled
D4AST 4 in. (102 mm) Single
D5AST 5 in. (127 mm) Single
D6AST 6 in. (152 mm) Single
D7AST 7 in. (178 mm) Single
D8AST 8 in. (203 mm) Single
D6HTAS 6 in. (152 mm) Double
D7HTAS 7 in. (178 mm) Double
D8HTAS 8 in. (203 mm) Double


  • Available with or without handles
  • Bulk unassembled dampers available


2017 Full Line Catalog Catalog Metal Fabrication


Write a Testimonial

Your Name
Rate This Product