SKU: 35392317261
flexible plant pot liners

flexible plant pot liners Pre Insulated Chimney Liner Kit | Insulated Flexible Chimney Liner Kit

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Description

flexible plant pot liners Pre Insulated Chimney Liner Kit | Insulated Flexible Chimney Liner KitApplications for Pre Insulated Chimney Liners Pre insulated flexible chimney liners can be installed inside a masonry chimney for the applications listed below. Fuel Types: Wood and wood pellet fuel Non condensing Gas fuel Oil fuel Coal Insulated Chimney Liner Replacement Examples: Fireplace inserts Wood stoves Traditional masonry fireplaces Furnaces Boilers Water heaters *Always check the manual for the appliance you are venting regarding venting

Applications for Pre-Insulated Chimney Liners

Pre-insulated flexible chimney liners can be installed inside a masonry chimney for the applications listed below.

Fuel Types:

  • Wood and wood pellet fuel
  • Non-condensing Gas fuel
  • Oil fuel
  • Coal

Insulated Chimney Liner Replacement Examples:

  • Fireplace inserts
  • Wood stoves
  • Traditional masonry fireplaces
  • Furnaces
  • Boilers
  • Water heaters

*Always check the manual for the appliance you are venting regarding venting requirements

Details and Features

Rockford's Pre-Insulated Chimney Liner Kit is our original & signature chimney liner with the enhanced feature of arriving at your doorstep insulated. No extra time or hassle added to your installation when you choose a pre-insulated chimney liner.

Additionally, the 316Ti Stainless Steel Chimney Liner is an all-fuel liner including wood, pellet, gas, oil, coal. 316Ti features a unique titanium alloy designed to resist flue acids and the extreme stresses of hot and cold cycles. Most important, it can withstand multiple heating cycles up to 2100 degrees.

UL Listed UL 1777 and made of the highest quality, hand picked stainless steel and fabricated right here in the United States. You can't go wrong with this tried and tested insulated liner for your re-lining installation.

  • 316Ti Stainless Steel Inner Liner
  • 430 Stainless Steel Outer Protective Liner
  • 1/2" thick chimney insulation
  • Designed to resist flue acids and extreme temperatures
  • UL Tested and Listed
  • Category 1 / Residential
  • Lifetime Warranty
  • Free Shipping
  • Complete installation instructions - Most installations will take no more than 2 to 3 hrs. No rivets or clamps required.
  • Customer Support from Rockford's Certified Technicians

About the Inner and Outer Liners

Fabricated with a 316Ti stainless steel inner liner, and a 430 stainless steel outer liner, you can't go wrong with this choice. The inner liner will vent the flue gases, while the outer liner will protect the insulation as it's being installed down the chimney flue. Moreover, with 7 ply seams and 10 corrugations per seam, it is a very durable liner that is air and water tight. 

The purpose of the outer lining is to protect the insulation and keep it intact during installation. The 430 stainless steel outer lining isn't directly in contact with the emissions and by-products like the inner lining is. By using 430 stainless steel outer lining, you will not find a Pre-Insulated flue liner as economical and affordable as ours, without compromising on quality.

Not only is our insulated chimney liner made from prime stainless steel, but also features 1/2" thick insulation between the two linings. Most important, this ensures the flue gases stay hot and less creosote will build inside. By choosing to install a pre-insulated chimney liner, you avoid time and hassle with wrapping insulation around your flex liner.

Measuring & Installing Your Insulated Chimney Liner Kit

Measuring for your stainless steel insulated chimney liner is one of the most important steps. Specifically, measure the exact inside measurements of the chimney flue or brick chimney, this will ensure the chimney liner will fit down your masonry flue. Add 1.25” to the liner size for the outside diameter (Ex: The 6” liner has a 7.25” Outer Diameter).

Be sure the proper size liner, sized to the appliance you are connecting to, will fit down your current masonry chimney. Here is a link to our helpful measuring guides and a link to our Chimney Liner Size Calculator.

Additionally, view our easy-to-follow chimney liner installation video.

How to Order a Chimney Liner Kit

Customize your Stainless Steel Chimney Liner Kit step by step with our easy ordering menu. Included in your chimney liner kit:

Step 1: Flexible Stainless Steel Chimney Liner

Pre-Insulated Chimney Liners - Air and water tight, with 7 ply seams and 10 corrugations per seam for the very best durability and strength on today's market. Additionally, the inner liner is encased with 1/2" thick insulation for the very best installation. UL Listed and made of the highest quality, hand picked, prime stainless steel made in the United States. Fuels include gas, oil, wood, pellet, and coal.

To begin with, select the proper size diameter chimney liner for the appliance you are connecting to. If you need assistance sizing, contact one of Rockford's Certified Technicians and we will be happy to assist.

Note: The sizes give in the menu are inside diameters. Add 1.25" for the outside diameter of the liner.

Next, select the proper length for the chimney height. We fabricate each liner kit in five foot increments. You will want to round up and choose the liner length that is the nearest length.

Chimney Liner Insulation

One of the most frequently asked questions is "Do I Need to Insulate My Chimney Liner?". Most often, for solid fuels, the answer is yes and typically required. On the other hand, for gas and oil, it's recommended, but not always required. Here are a few articles we've written to help you understand chimney liner insulation requirements.

By ordering a pre-insulated chimney liner, all you need to do is install it once you receive it. With attention to a simple installation, you avoid the added time of wrapping the insulation around your flex liner.

Step 2: Bottom Connector

Secondly, you will select the Bottom Connector, which will connect the flexible chimney liner to the appliance. Not only is our Quick-Connect system extremely secure, but also easy to install. In general, there are two different styles of Bottom Connectors.

The first option is a Two-Part Tee Connector. Use the Tee Connector to connect horizontally to the appliance or to the connector pipe inside the room. This is a two-part Tee Connector with a removable snout. Tee Connector Installation Video

The second option is a Vertical Appliance Connector. Use the Vertical Appliance Connector to connect directly to the top of the appliance.

You will find an application summary for each Bottom Connector in the dropdown menu. Keep in mind, the connectors are made to fit around the flex liner and will be 1/4" to 1/2" larger than the diameter listed. Additionally, you will need to trim back 2-3" of the insulation to properly connect to the Bottom Connector.

Step 3: Top Plate

Thirdly, you will select a Top Plate size which will terminate and secure the chimney liner in place at the top of the chimney. Choose the size & style top plate that will fit your chimney flue tile or brick opening. Above all, with our extremely secure Quick-Connect system, installation will be a breeze.

You will find an application summary for each Top Plate in the dropdown menu. For additional information, see our Top Plate Options Overview Video.

Additionally, you will need to trim back 2-3" of the insulation to properly connect to the Top Plate.

Step 4: Rain Cap

Lastly, select a Rain Cap to place over the collar on the Top Plate. This will protect & keep critters, debris, and weather out of the chimney flue. Easy to install and extremely secure with our Quick-Connect system. Not only does the Round Rain Cap feature a mesh screen, but it also has a wind guard to protect against downdrafts.

Add to Cart

Lastly, add the product to your cart to view pricing and summary of the chimney liner kit build.

Need More Help?

Contact one of Rockford's Certified Technicians today to help answer your questions and assist in planning your installation. Our Technicians are CSIA and NFI Certified; ready to take your call, email, or text.

Pre-Insulated chimney liner kits in stock typically ship within 1-5 business days, if it is backordered or custom size the lead time is 1-4 weeks during peak season.

Why Choose Rockford's Insulated Chimney Liner

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 through 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.

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.

Rockford carries a complete selection of chimney liner supplies. Our hearth liner kits and components are premium stainless-steel and 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 replacement system available. Our service, price, & quality is unmatched, anywhere.

With attention to Canadian customers, please use our US Border Depots to save on shipping.

Shipping Method

Lead time 2-5 business days

15 ft. 20 ft. 25 ft. 30 ft. 35 ft. 40 ft.
3 in. GROUND GROUND GROUND GROUND FREIGHT FREIGHT
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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35392317261

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4.3 ★★★★★
Based on 6 reviews
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Verified Purchase
Jessica Ward
Battle Creek, US
★★★★★ 5
Perfect Enrichment for my Puppy
Size: Small, Number of Items: 1
Amazing!! Super durable and exactly what I was looking for! My dog loves this and it keeps him very busy! It fits about half a cup inside and can be used anywhere.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
G
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Gerald B
Chelsea, US
★★★★★ 4
Can't be clean but provides fun.
Size: Small, Number of Items: 1
It's well made and our pup really does like it. The only thing is, it doesn't fully open to clean it out. I wouldn't buy it again for that fact. It's tough plastic and sturdy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
S
Verified Purchase
Susan Goforth
Boise, US
★★★★★ 5
Best dog toy!!
Size: Large, Number of Items: 1, Size: Large, Number of Items: 1
Best dog toy ever. They stayed occupied and have fun !
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
D
Verified Purchase
D. Gilbert
Dallas, US
★★★★★ 3
Good contruction but needs a couple revisions
Size: Small, Number of Items: 1
Searching for an interactive toy to feed my beagle his meals from, I first tried the . It split open too easily in rough play and only had the capacity to hold half of a meal. Next I tried for it's larger capacity but it broke at the lid (to Premier's credit they replaced it but I feared it would simply break again). Now on to the Bob-A-Lot. This is a heavy, well made product. I was surprised by the weight. My dog can pick it up but can't carry it for very long. I feel it's not going to break like the others did. That said, the extra weight makes it a noisy toy especially on hard wood floors. The small Bob-A-Lot holds a little over 1 cup of food (large holds 3 cups) but there is a caveat. This is the capacity of the lower chamber. There is actually a separate chamber in the top of the toy that only holds about quarter cup. As a result I have to shake and shake the toy myself to get the food to drop into the lower chamber to load in a complete meal. It's either that or insert food 1 piece of kibble at a time. I wish this toy screwed apart like the IQ Treat Ball or Tug-A-Jug. Despite it's appearance, it does NOT screw apart in the middle. Also slightly annoying is the bottom door doesn't stay fixed into position well. The IQ Treat Ball smartly has several positions for the door to stay locked in. The Bob-A-Lot door is fully adjustable but has often come open more than I want during feeding. As a result the kibble will spill out faster which ruins the challenge. I inquired to Starmark support and they suggested that I use a bit of cardboard or some such to try and jam the door into a specific position. This right here tells me that some additional design could be used. I'd say that the Bob-A-Lot was designed with dogs in mind but not humans. It's a chore to load in the food. And then the door opens too much giving the dog an easy meal. I might even guess that it takes less time for my dog to empty it than it takes for me to fill it. Overall it's the best option I've found but I'm still searching for the perfect combination of all 3 of the toys.
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Reviewed in the United States on July 30, 2011
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Verified Purchase
DrM
Alexandria, US
★★★★★ 5
Aggressive chewer approved
Size: Large, Number of Items: 1, Size: Large, Number of Items: 1
Got this to help amuse my 90lb GSD while I was out of town for a month. He gets one meal a day in it, and really enjoys the work. It’s easy, not a puzzle, no frustration, just a “job.” He chewed on the yellow top pretty aggressively while I was gone, and it still works fine. This is a dog that destroys even the most durable chew toys in minutes to hours when he’s anxious, and I imagine he experienced some anxiety while I was gone especially during periods when he was alone. So, I’m quite pleased with the durability. This will definitely stay in the meal service rotation and I will replace it if necessary. One thing to note: the fill hole is pretty small. His kibble is small enough that one might think it would easily pour right in, but no. At some point I’ll get annoyed enough to pull out my drill and make that hole larger.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026

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