3 in. 316 Flexible Chimney Liner Tee Kit or Insert Kit with Optional Insulation
Estimate for one unit, air shipping. Final total is confirmed at checkout.
Product arrives warehouse Sep 23 - Sep 25. Products ship from our warehouse every Friday. Delivered to you by Oct 6, 2026.
About this item
Free same day shipping to all lower 48 US states | Made in USA
3 inch 316 .006 Stainless Steel Flexible Chimney Liner Kit with Tee or Insert Connector and Optional Insulation Kit
Your new stainless chimney liner kit will include:
- 3" diameter Premium .006 Thick RockFlex Stainless Steel Flexible Chimney Liner (316) - Simply select the chimney liner length you need above. The chimney liner is air and water tight sealed. 7 seams with 10 corrugations between each seam. These liners have the very best flexibility and strength combined on today's market. When they heat up they expand, when they cool down they contract, cutting down and fighting against creosote build up. Note: The size given is the inside diameter. Add 1/4" for the outside diameter of the liner. Tee connectors require an additional 1/2" of clearance.
-
13" x 13" Top Plate with a Quick Connect Collar - You can trim it to fit with a pair of snips and it's ready for installation. The quick connect band clamp securely tightens around the stainless steel flexible liner to secure it from the top of the chimney. -
Square Quick Connect Flue Cap with mesh screen. Fasten down the quick connect clamp to the collar of the Top Plate and you're done! A sharp looking cap that installs in a snap. The chimney cap reduces the risk of animals, debris, and weather entering the home.
2 Part Tee & Tee Cap or Liner to Appliance Vertical Connector; it's your choice - We offer this kit with either a standard Tee connector with a 10" removable snout and clean-out cap or with a standard Liner to Appliance Vertical Connector. Typically if you're connecting horizontally you will need the Tee and Tee Cap, if connecting vertically you will most likely need the Liner to Appliance Vertical Connector. It's your choice; simply select your preference at the top of this listing.- Complete Installation Instructions (Installing a Chimney Liner Made Easy). If you're at all handy, do this job yourself and save between $1,200 and $2,500. We will support you before and after the sale.
- Lifetime Warranty and it is transferable if you should ever sell your house.
No screws or rivets required! All components stainless steel, including the top plate. We only offer the very best, 100% made in the USA.
You may also select the optional Chimney Liner Insulation Blanket Kit for 3" To 6" Diameter Liners. To purchase the insulation kit, please select this option from the menu at the top of this listing.
Why Insulate? Learn more about chimney insulation.
It is strongly advised that you do insulate your stainless steel chimney liner to help increase draft and reduce the amount of creosote accumulation. Insulating with our 1/2" thick insulating blank wrap will meet UL listing 1777 standards and provide a zero clearance to combustibles.
This kit will fit chimney liners with a diameter of 3", 4", 5", 5.5", 6", and 6.5". An insulation kit will add about 1.5" to the overall diameter of the liner.
Kit Includes:
- 1/2" x 24" x 25' 3mil Foil Face Insulation Wrap - AES (Alkaline Earth Silicate) Wonder Wool Chimney Liner Furnace Insulation Blanket
- Stainless Steel Retractable Mesh - Keeps the insulation from being damaged during install and holds the insulation in place over time.
- Insulation Spray Adhesive
- Roll of HVAC Foil Tape
- 2 Clamps to hold mesh in place
Features:
- Low bio persistence
- Thermal stability
- Low heat storage
- Great resistance to tearing
- Flexible and resilient
- Immune to thermal shock
- The best thermal insulating performance
To learn more about chimney lining systems & insulation click here: Chimney Liner Installation
Additional Information:
- RockFlex Chimney liner - is constructed of 316 prime stainless steel; it exceeds all chimney industry standards. No seconds or inferior metals are used.
- Quick connect system - Fast, easy, installation. No screws or rivets required. Simple tighten the clamps and enjoy your UL Listed liner.
- Warranty - The only warranty in the business that is transferable to the next homeowner with no time limits.
- UL1777 listed in the USA and ULCS635 in Canada β No chimney liner system has what we have, the best zero to zero clearance listing. All of our chimney repair products have been put through many stringent and rigorous tests to assure our customers they are purchasing the very best the industry has to offer.
- Components β All components, including the top plate, are manufactured from 100% stainless steel.
Your order may be shipped in two or more boxes. So don't worry if you don't receive all your items in one box, but do give us a call if you have any questions!
We carry a full line of chimney supplies. If we don't have it, our Custom Shop will build it within 48 hrs. We also have chimney liners in 3", 4", 5", 5.5", 6", 6.5", 7", 7.5", 8", 9", 10", 12", 14", and 16". Be sure to check out our other items, and add us to your favorites list.
Contact Us: If you have questions, please feel free to call us or send us an eBay message.

Condition

3 in. 316 Flexible Chimney Liner Tee Kit or Insert Kit with Optional Insulation Β· x1
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