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Rockford Chimney Supply Spring Sale!

10% Off Stainless Steel Chimney Liner Kits

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chimney liner smoothwall

Smooth Wall Flexible Flue Lining Kits

Rock-Flex Deluxe Smooth Wall 316Ti Flexible Stainless Steel Chimney Liner & Components Kit
APPLICATIONS: Wood, pellet, gas, oil, and coal burning appliances

Note: Because of its special construction, smooth wall flexible liner cannot be ovalized or shaped in any way. If you need a shaped liner, please see our oval, square or rectangle chimney liner kits.

smooth wall chimney liner kit
How this page works:

  • Select liner size and length in step 1.
  • Select kit components for your application in steps 2-4.
  • Click on Add To Cart at end for total cost.

Step 1 - Select a 316Ti stainless steel chimney liner below.   (Click here for help with liner size.)

smooth wall flexible stainless steel chimney liners

Due to its superior flexibility and increased BTU capacity, our smooth wall liner is gaining in popularity. Its smooth interior design allows for more airflow, adding back the 20% drag factor that's lost in traditional corrugated liners. And since it's made of 7-ply 316 stainless steel and 2 inner linings (.013 total thickness), it's great for any application. 100% stainless steel and 100% made in the USA.

Note: The sizes given in the menu below are inside diameters.
Add 1/4" for the outside diameter of the liner.
Tee connectors require an additional 1/2" of clearance.

Pulling Cone for Round Flexible Liner Optional Accessory: Pulling Cone
Pulling cones can make liner installation easier. With a rope attached to the eyelet, you can guide it through hard to maneuver twists and offsets in the flue.
Yes, please include a Pulling Cone - $59.99
No, thanks

Insulation Blanket Kit Recommended Option: Insulation Kit
Insulating your chimney liner keeps flue gases hot and helps prevent creosote buildup. Our insulation kit contains everything you need to wrap your liner with foil lined blanket insulation.
Click here to see our chimney liner insulation kits.

Step 2 - Select one stainless steel bottom connector per flue liner selected in step 1.

Tee Connectors:

Flex chimney liner Tee with removable snout and clean outstainless steel chimney liner setup with tee connector diagram

*for 5" or larger liners - for smaller sizes visit our Custom Shop

Click to see how to install the Tee Connector

Pellet Stove Tees:

Pellet stove 3" to 4" Tee flue liner connectorchimney liner pellet stove Tee and clean out

Pellet stove tee with removable snout

Vertical Connector:

Chimney liners appliance connectorchimney liner kits

Pellet Insert Vertical:

Pellet liner insert vertical connector 3" to 4" adapterPellet insert ss chimney liner vertical connector diagram

Flex Liner Snout Adapter - for 6 in., 7 in, and 8 in. liners

Flex Liner Snout Adapter - for 6 in., 7 in, and 8 in. liners

The Snout Adapter reduces the tee snout diameter, allowing you to attach a flexible chimney liner without having to crimp the tee snout. Shown with tee connector (not included).

Step 3 - Select one stainless steel flue cap per liner selected in step 1.

square chimney liner rain cap

Square Rain Cap
(No additional charge)

round chimney liner top

Round Rain Cap
(No additional charge)

Step 4 - Select one stainless steel top plate per chimney liner selected in step 1.

No Sag

No Sag Top Plate

13x13 - $0
13x18 - $35
18x18 - $45

Flat Top Plate

Flat top plate

13x13 - $0
13x18 - $35
18x18 - $45
24x24 - $86

Terra Cotta Top Plate
(See our Sizing Chart.)

Terra cotta clay tile top plate

8x8 - $43.00
8x13 - $48.00
13x13 - $58.00
13x18 - $63.00

Deluxe Flat Top Plate with Cap

Deluxe flat hinged rain cap for fireplace liners

Deluxe Terra Cotta Top Plate with Cap
(See our Sizing Chart.)

Deluxe hinged clay flue liner chimney caps

8x8 - $88.99
8x13 - $93.99
13x13 - $103.99
18x18 - $128.99

If you select one of the two Deluxe Hinged Top Plates in step 4 any rain cap you may or may not have selected in step 3 will automatically be removed from your order for your convenience. As can be seen in the pictures directly above, the two Deluxe Hinged Top Plates already include a rain cap.

Recommended Accessories

Insulation Kits
Insulation Kit

Top Plate Silicone Adhesive
Silicone Adhesive

Damper Sealing Kit
Damper Sealing Kit

Complete installation instructions

"DIY chimney liners installed the easy way. " Most installations will take no more than 2 to 3 hrs. No rivets or screws required. Chimney liner installation instructions.

Lifetime Forever transferable chimney liner warranty.

316Ti Stainless steel fireplace liners are used with fuel types such as wood, pellet, gas, oil, and coal.

Each Rockford Chimney Liner Kit Includes:

  • 316Ti Stainless steel chimney liners - Air and water tight, with 7 ply seams and 10 corrugations per seam for the very best flexibility and strength on today's market. Rated number one in the industry for strength and flexibility. Made of the highest quality, hand picked, prime stainless steel.
  • Rain Cap - Quick connect square or round top cap with a screen enclosure to keep critters and debris out. The round has a wind guard to protect against downdrafts.
  • Connectors - Quick connecting tee with a removable horizontal snout for easy installation through your chimney thimble. Or a quick connecting liner to stove connector vertical appliance connector. (If you're connecting vertically to the top of your appliance you will most likely need the liner to stove connector. If you're connecting or exiting the chimney horizontally you will most likely need the tee and tee clean out.) If you have a pellet stove and need a 3" to 4" tee simply choose it in the options above. To see the different types of bottom connectors click on the yellow, green, blue, and red pictures above.
  • Top Plate - No Sag top plate featuring the quick connect system, so strong you can stand on it and it will not sag! Or a perfect fitting Quick Connect flat or terra-cotta top plate. Simply make your choice using the drop down window below.
  • Complete installation instructions - DIY stainless steel metal chimney liners installed the easy way! Most installations will take no more than 2 to 3 hrs. No rivets or clamps required.
  • Warranty - Lifetime Forever transferable chimney liners warranty.
  • Support - Free 7 days a week toll free phone support.

We offer the best protection for you and your home. Air and water tight chimney liners, seven ply seams that lock moisture and flue gases in the flexible flue liner which keeps them from leaking into the home.

Guards Against Corrosion - Certified Rock Flex stainless steel chimney liners protect against hostile acids which deteriorate masonry clay tile chimneys.

What About Creosote? - Rockford chimney flue liners do not allow creosote to leach though the liner unlike masonry, clay tile flues, or liners not made of prime stainless. Creosote can catch fire, thanks to Rock Flex this harmful creosote is minimized and contained.

Seals Off Carbon Monoxide - When it comes to safety our flexible chimney liners will protect the structure of your home from moisture damage and the very real potential of carbon monoxide poisoning.

UL Listed in the USA and CANADA - Our stainless steel flue liners and components are UL tested and listed to UL1777 standard, Underwriter Laboratories. UL is the leader and most recognized in the United States, don't settle for less.

Lifetime Transferable Warranty - The best warranty anywhere, transferable to new homeowner if you decide to sell. You're going to feel good about this purchase, plus you're adding value to your home.

316Ti Liners - A unique titanium alloy designed to resist flue acids and the extreme stresses of hot and cold cycles. It can withstand multiple heating cycles up to 2100 degrees.

Rockford carries a complete selection of chimney liner supplies. Our hearth liner kits, chimney liner Insulation kits, and all chimney lining kit components are premium stainless-steel, they are 100 percent manufactured in the USA. Buy chimney liners online at Rockford Chimney Supply and you are guaranteed to be getting the best chimney liner supply and lining system available. Our service, price, & quality is unmatched, anywhere.

Canadian customers use our US Border Depots and save on shipping costs.

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