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United States: 320-274-7387 • 800-328-3530 | Canada: 320-274-2376 • 800-219-1085 | International: 01-320-274-2376

49

Dampers and Components

Malco 28 Gauge Dampers feature 1/4 in. (6.4 mm) bearings allowing 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.

See below.

D8HT100

D5100

D7HT100

D6HT100

D6100

• Fast installing hammer-on design.

• For use on 30-24 gauge (0.41-0.71 mm) galvanized steel.

• Standard 5/16 in. (8 mm) threads. / Packaged 12 sets per bag.

Note: Not for stove pipe:

Use only for air handling applications

where temperature does not exceed 350°F (176°C).

Single Bearing / Spring Loaded:

1-spring bearing / 1-inside washer /

1-handle / 1-wing nut

Double Bearing :

2-spring bearing / 1-inside washer /

1-handle / 1-wing nut

Double Bearing :

1-spring bearing / 1-fixed tip / 1-inside washer /

1-handle / 1-wing nut

Catalog

Pipe Diameter

Number

in. (mm)

Bearing

Standard Dampers, including Wingnuts

(Unassembled)

28 Gauge (0.48 mm) 100 packs

D5100

5 (127)

single

D6100

6 (152)

single

D6HT100

6 (152)

double

D7HT100

7 (178)

double

D8HT100

8 (203)

double

Standard Dampers, including Wingnuts

(Pre-assembled)

28 Gauge (0.48 mm) 100 packs

D4AST

4 (102)

single

D5AST

5 (127)

single

D6AST

6 (152)

single

D7AST

7 (178)

single

D8AST

8 (203)

single

D6HTAST

6 (152)

double

D7HTAST

7 (178)

double

D8HTAST

8 (203)

double

Bulk Components

(100 pack) Damper Handles

H1100

Damper Regulator Hardware

DR69

DR70

DR71

Dampers

Hardware and Components

CAUTION:

Malco Dampers are designed for

forced air systems, they are not capable of being

used in wood, coal, or other similar systems.

D4AST