Founder’s Day Deals. Save On Every $100+ Spent. Today Only! Founder’s Day Deals. Save $5 on every $100 Spent! Founder’s Day Deals. Save $15 on every $200 Spent! Founder’s Day Deals. Save $35 on every $400 Spent! Founder’s Day Deals. Save $50 on every $500+ Spent!

Founder’s Day Deals. Save on Every $100 Spent. Today Only!

Sale Ends April 25th at Midnight (MST)

t

Search...

National Chimney Sealtight Damper

(7 customer reviews)

$253.35$397.65

Please select all options before adding to cart.

  • Attaches to the top of the flue
  • Tight, gasketed fit to seal out the elements
  • Not for use on chimnies venting gas logs
  • Includes a lifetime warranty

Estimated Delivery:

Apr-30  -  May-07
Free Shipping

Free Shipping

This product qualifies for free shipping to lower 48 states.

Factory Shipped

Factory Shipped

Typically ships between 3-5 business days.

National Chimney Sealtight Damper | Dampers / Damper Chimney Caps | Roofing Direct

National Chimney Sealtight Damper

$253.35$397.65

Item# ST

(7 customer reviews)

Product Summary

This is a great option for homeowners who don’t want a cap visible on their chimney. The National Chimney Sealtight Damper attaches to the top of the flue. It provides a tight gasketed fit to seal out weather, insects, birds, and other animals while keeping in heat. (This damper can also be installed beneath a HY-C chimney cap.) Each damper kit includes a Lifetime Warranty, 30’ cut-to-fit cable, fireplace bracket, cool-touch spring handle, mounting adhesive, and hardware. Do not use on chimneys venting gas logs.

RoofingDirect.com offers an excellent selection of high quality dampers and damper caps for your next roofing job. Our team has decades of industry experience and is ready to serve you. Please contact us, and we will be happy to answer any questions.

Features + Benefits

  • Attaches to the top of the flue
  • Tight, gasketed fit to seal out the elements
  • Not for use on chimnies venting gas logs
  • Includes a lifetime warranty

Product Specifications

Item #
ST
Weight
3 lbs
8" x 8" Damper
Fits Flue Sizes 6 3/4" x 6 3/4" to 9" x 9"
8" x 17" Damper
Fits Flue Sizes 6 1/4" x 14 1/2" to 8 3/4" x 16 3/4"
9" x 13" Damper
Fits Flue Sizes 6 1/2" x 10 1/2" to 9" x 12 3/4"
12" x 16" Damper
Fits Flue Sizes 9 1/4" x 13" to 11 3/4" x 15 1/2"
13" x 13" Damper
Fits Flue Sizes 10 1/8" x 10 1/8" to 12 3/4" x 12 3/4"
13" x 18" Damper
Fits Flue Sizes 9 5/8" x 15" to 12 3/4" x 17 1/2"
18" x 18" Damper
Fits Flue Sizes 15" x 15" to 17 3/4" x 17 3/4"

Product Reviews

7 reviews for National Chimney Sealtight Damper

4.4
Based on 7 reviews
1-5 of 7 reviews
  1. Great product, easy to install.

    • David, thank you for letting us know that the damper was easy to install!

  2. Took too long to get the damper

    • Lisa, thank you for leaving a review for the Sealtight Damper. We apologize for the extended delay on your order. The manufacturer was waiting on a part they needed to complete the assembly. After receiving it, we hope that it has exceeded your expectations!

  3. perfect fit. customer rep was very helpful.

    • Ben, thank you for your review! We are glad that our rep was able to help you out and it fits perfect!

  4. No comment

    • Thank you for leaving 5 stars on the sealtight damper.

  5. Good direction, easy install, good investment

    • We appreciate your review! Thanks

Add a review
National Chimney Sealtight Damper National Chimney Sealtight Damper
Rating*
0/5
* Rating is required
Your review
* Review is required
Name
* Name is required
Add photos or video to your review
* Please confirm that you are not a robot

Questions & Answers

Have a question about a product that you cannot find the answer to? Ask below and we will respond. If your question is urgent, please call 855-670-7663.

Q & A

My damper like this is 13x13” at the widest edge. Will the HY-C cap 13x13” fit? Terry B asked on October 17, 2021

Yes, this damper is compatible under HY-C caps.

answered on October 20, 2021 store manager
(0) (0)
What material is the damper made out of? Rayna Ream asked on October 12, 2021

This damper is made with cast aluminum and stainless steel hardware.

answered on October 13, 2021 store manager
(0) (0)

Ask a question

Your question will be answered by a store representative or other customers.

Thank you for the question!

Your question has been received and will be answered soon. Please do not submit the same question again.

Error

Warning

An error occurred when saving your question. Please report it to the website administrator. Additional information:

Add an answer

Thank you for the answer!

Your answer has been received and will be published soon. Please do not submit the same answer again.

Error

Warning

An error occurred when saving your answer. Please report it to the website administrator. Additional information:

Scroll to Top
Our Story |  | Roofing Direct

Thank You!

Your registration was successful. You have received 10 points to use on your first order.