Vacu-Stack TDW

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Vacu-Stack TDW

Availability: In stock

Model TDW. The Premier Chimney Cap used for solving common wind-related chimney draft problems.



The Vacu-Stack TDW is specifically designed for use with double or triple wall air-cooled or air insulated chimneys.

The Collar Covers Approximately 16"

Stop Down Drafts and Smoking Caused From:

  • Mountain winds in homes near slopes
  • Wind deflected by tall trees
  • Erratic, turbulent wind around buildings or other obstructions
  • Appliances vented through the sides of buildings

The Vacu-Stack TDW is made of 304 stainless steel and is available in 6", 7", 8", 9" and 10" round diameters.

To install, simply slide the Vacu-Stack TDW (with the spring fit design) into the pipe.

Most of the wind-related down draft issues will be greatly improved when using the Vacu-Stack. Non wind-related problems may also see improvement when using the Vacu-Stack, but may not completely cure the issue.

The Vacu-Stack also performs as regular rain cap protecting againt debris, snow, rain and critters.

If the Vacu-Stack has been installed it may not be returned.


Customer Reviews 3 item(s)

Downdraft issues
Ordered this To help prevent downdraft issues did not solve the problem at all the staff in customer service was very very excellent and helpful
Review by Mike Crandell / (Posted on 2/8/2019)
recent order
don't screw around elsewhere,these folks got it down.i called the company that makes vacustack,gave me the wrong # for what I was looking for,took 2 seconds for fireside had the right number and checked me out,only ones I will deal with for wood stove needs.
Review by Robert Schafer / (Posted on 10/17/2018)
Good company to work with
" I just finished the project and tried it out, and it all worked out great. I am very grateful for all your advice on this job.
Thanks very much Bill
Steve Corbitt"
Review by Steve / (Posted on 1/12/2015)