Duct Plugs | McMaster-Carr

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25/64" to 19/32"

33/64" to 45/64"

41/64" to 25/32"

23/32" to 15/16"

51/64" to 1 1/64"

29/32" to 1 1/16"

61/64" to 1 3/32"

1 1/32" to 1 1/4"

1 5/64" to 1 21/64"

1 3/16" to 1 29/64"

1 15/64" to 1 17/32"

1 5/16" to 1 39/64"

1 27/64" to 1 11/16"

Duct Size

Shape

Material

304 Stainless Steel

Tapered Plug Trade Size

Height

Expansion Plug Type

Color

OD

Component

Damper Hardware

Fitting Connection

Quick-Disconnect Clamp

Performance

Chemical Resistant

High Temperature

For Use With

DFARS Specialty Metals

Export Control Classification Number (ECCN)

RoHS

REACH

For Duct Shape

Maximum Temperature

Gauge

Overall Height

Blade Material

304 Stainless Steel

Gender

Hardness

End Construction

Seal Material

Synthetic Rubber

How can we improve?

166 Products

Protective Plugs

Tight-Hold Tapered Plugs

Tight-Hold Tapered Plugs

Tighten the wing nut to expand and seal

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Circulate air through HVAC systems using round, rectangular, and fabric duct

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Seal pipe and tubing lines when checking for leaks

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Maintain consistent airflow in your furnace to improve its performance

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)