How the SEAL TIGHT Damper works:

Seal Tight Chimney Closed


The SEAL TIGHT DAMPER attaches to the top of the chimney's flue tile liner. Provides a tight, gasketed fit that seals in your heat and seals out weather, insects, birds and animals.

Seal Tight Chimney Open


A slight pull on the chain releases the spring-loaded top into the open position when you're ready to burn your fireplace.

Handle Black Background


SEAL TIGHT dampers are EASY to operate! The bracket is attached to the fireplace wall, keeping the cool-touch spring handle easily accessible. A slight pull on the handle opens and closes the damper.

HYC Chimney


Seal Tight Dampers can be installed beneath a HY-C chimney cap; this provides a cover if the damper is open when it is raining or snowing; also provides screening to keep out birds and animals when the Seal Tight damper is in the open position.

Download Instructions to install Seal Tight with a Hy-C Cap: Installation Details
Seal Tight Logo White Large

The SEAL TIGHT damper is a low-profile top mounted damper that also serves as a chimney cap.

Heat loss up the fireplace chimney accounts for an average 8% of your home heating costs! Seal Tight Dampers help prevent this heat loss. Stay warmer and save money!

  • Four Season Protection for your chimney. When closed, the damper seals in your heat and air conditioning, seals out birds, animals and insects.
  • Serves as a chimney cap when closed
  • Replaces leaky throat dampers
  • Easily accessible handle mounts inside of fireplace
  • Precision engineered mechanism is easier to open and close than throat dampers
  • The practical solution to upgrading fireplace chimneys in older houses that never had a damper installed previously
  • Constructed of stainless steel and aluminum so components will not rust or corrode.
  • Always opens to a pre-set height
  • Defaults to open position for maximum safety
  • Lifetime Warranty
Seal Tight Closed
Seal Tight Damper
in CLOSED POSITION
Seal Tight Open
Seal Tight Damper in
OPEN POSITION

The SEAL TIGHT damper attaches to the top of the flue tile on fireplace chimneys. Our models are sized by common flue tiles and available in 7 Sizes:


Model
Size
Minimum Outer Dimension of Flue Tile
Maximum Outer Dimension of Flue Tile
8 " x  8"
6-3/4" x 6-3/4"
9" x 9"
8" x 17"
6-1/4" x 14-1/2"
8-3/4" x 16-3/4"
9" x 13"
6-1/2" x 10-1/2"
9" x 12-3/4"
12" x 16"
9-1/4" x 13"
11-3/4" x 15-1/2"
13" x 13"
10-1/8" x 10-1/8"
12-3/4" x 12-3/4"
13" x 18"
9-5/8" x 15"
12-3/4" x 17-1/2"
18" x 18"
15" x 15"
17-3/4" x 17-3/4"

Each damper kit includes:

  • 50' cable which can be cut to adjust for perfect fit; fireplace bracket and cool-touch spring handle
  • Mounting adhesive and hardware

Optional Accessories:

  • 50 replacement cable
  • 4' cable shield (protects cable inside chimneys with offsets)

SEAL TIGHT Dampers are made for use only with open burning masonry fireplace chimneys and are NOT suitable for use in these installations:

  • Don't use on chimneys serving vented gas logs. Vented gas logs require the fireplace damper to be removed completely or fixed to a permanently open position; this is to assure that soot, fumes and carbon monoxide do not enter your home.
  • Don't use on chimneys serving wood stoves or other appliances such as inserts, furnaces, etc.

INSTALLATION

SEAL TIGHT Dampers can be installed by homeowners who feel comfortable working on a roof, but U.S. Fireplace Products, Inc. strongly recommends you use the services of a qualified chimney sweep  who can also inspect your chimney and provide other valuable home safety services.