Superior 8DM and 8HT Chimney Firestop Thimble - For 8-Inch Inner Diameter Superior Chimneys
Home Chimney Pipe Venting Thimbles
Superior 8DM and 8HT Chimney Firestop Thimble - For 8-Inch Inner Diameter Superior Chimneys

Superior 8DM and 8HT Chimney Firestop Thimble - For 8-Inch Inner Diameter Superior Chimneys

$96.00 $119.99 20% Off
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Contractor / Technical Details

Product Line

8DM

Vent Type

Wood Vent

UL Listing

UL127

Pipe Shape

Round

Telescoping

No

Adjustable

No

Number of Walls

2

Material

Galvanized Steel; Stainless Steel;

Frequently Purchased Together

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Product Details

Manufacturer: Superior
Superior Part Numbers: 38FST
Item Number: CUI-38FST
UPC: 043593040985

Features

  • Firestop thimble
  • Allows penetration of a joist
  • For use with standard and high-temperature 8" Superior or Superior Double-Wall Wood-Burning Chimney Pipes
This simple thimble from IHP/Superior is a great addition to any vent system. By adding a thimble to your vents, you can improve the convenience of your vent system and you can make it easier to install a vent for your fireplace. This simple thimble helps to improve air flow and create an easy to install system. This piece of equipment is easy to install, and it can be added to a fireplace system to improve the vents and create a more efficient vent solution for your home.

Contractor / Technical Details

Product Details

Product Line

8DM

Vent Type

Wood Vent

UL Listing

UL127

Pipe Shape

Round

Telescoping

No

Adjustable

No

Number of Walls

2

Material

Galvanized Steel; Stainless Steel;

Painted

No

Adapter Needed

No

Support Included

No

Rigid Compatibility

No

Includes Trim

No

Includes Insulation Shield

No

Is Firestop

Yes

Includes Adapter

No

Category

Through-Ceiling

Includes Cap

No

Vented

No

Firestop Type

Standard

Orientation

Vertical

Firestop Required

No

Air Intake

No

Dimensions / Measurements

Outside Diameter

12.375 inches

Inside Diameter

8 inches

Customer Q&A with Product Specialists

Michael E. from colo asked:
Will this work on a 2 1/2-pitch ceiling?
Will this work on a 2 1/2-pitch ceiling?
This firestop is designed for a flat surface only. 
Answered by: Cody S. on Mar 17, 2025

Helpful?

0
George from NV asked:
Is this designed to allow a 48-8DM chimney section to pass through? Thank you.
Is this designed to allow a 48-8DM chimney section to pass through? Thank you.
Yes, that is the product purpose exactly.
Answered by: Owen

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Customer Reviews

Superior 8DM and 8HT Chimney Firestop Thimble - For 8-Inch Inner Diameter Superior Chimneys
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
By Margaret E.
Oct 10, 2023

Essential Chimney Safety: Superior 8DM/8HT Chimney Thimble

This Superior Chimney Thimble effectively secures my chimney, ensuring safety and code compliance.
5.0
Star - 1 Star - 2 Star - 3 Star - 4 Star - 5
1 Reviews
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