Selkirk - 4" to 8" Complete Smoothwall Standard Liner Kit (Stainless Flexible Liner)

SelkirkSKU: 4MF25KTS

Sale price$994.56
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Length: 25-Feet
Diameter: 4-Inch
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.


Elevate your chimney's efficiency with Selkirk's 4" to 8" Stainless Flexible Liner Kit. Engineered with precision and crafted from high-quality 316 stainless steel, this kit is designed to redefine your fireplace experience. The complete package includes the chimney liner, tee with end cap, flashing, and rain cap – all meticulously crafted to ensure seamless assembly without the need for adapters or fasteners.

Say goodbye to complicated installations and welcome the integrated hose clamps that make assembly a breeze. This UL 1777 and ULC-S635 Listed kit offers not just convenience but also a higher BTU capacity, thanks to its smooth inner wall that enhances draft performance. This is more than a liner; it's a smart choice for upgrading your heating setup.


1. Maximum Efficiency: Elevate your chimney's efficiency with a smooth inner wall that ensures superior draft performance.

2. Easy Assembly: Integrated hose clamps make assembly quick, secure, and hassle-free, eliminating the need for adapters or fasteners.

3. Complete Kit: Everything you need in one package – chimney liner, tee with end cap, flashing, and rain cap.

4. Versatility: Suitable for gas, oil, or wood appliances, providing a versatile solution for various heating setups.

5. Enhanced Safety: The insulation wrap promotes quick heat up, enhances draft, and allows zero clearance between the liner and masonry chimney.

6. Smart Choice Warranty: Enjoy peace of mind with our Smart Choice warranty covering all components.

7. Higher BTU Capacity: Experience a higher BTU capacity for a more effective and powerful heating system.


1. 316 Stainless Steel: Crafted from high-quality 316 stainless steel for durability and longevity.
2. Flexible Design: The flexible stainless steel liner allows for easy and secure assembly.
3. Size Options: Available in 4" to 8" diameters to suit your specific chimney requirements.
4. Smooth Wall Liner: Easy to clean and offers higher BTU capacity and superior draft performance.
5. Insulation Wrap: Promotes quick heat up, enhances draft, and ensures zero clearance between the liner and masonry chimney.
6. Approval Certifications: Listed to UL 1777 in the U.S.A., ensuring compliance with rigorous safety standards.
7. Full Line of Accessories: Explore a range of accessory components for a comprehensive heating solution.

4" to 8" Diameter:

  • 316 Stainless steel
  • Complete Kits, Insert Kits & Pellet Kits available
  • Smooth wall liner is an easy to clean option with higher BTU capacity and superior draft performance
  • Insulation-wrap promotes quick heat up, enhances draft and allows zero clearance between liner and masonry chimney 
  • Can be installed on gas, oil or wood appliances
  • Full line of accessory components
  • Smart Choice warranty on all components


  • Listed to UL 1777 (Flexible Stainless Steel Liner installed with Insulation Wrap) in the U.S.A.
Part Number Product Code
Size (Diameter x Length)
194152 4MF25KTS 4"x25'
194153 4MF35KTS 4"x35'
195154 5MF25KTS 5"x25'
195155 5MF35KTS 5"x35'
196156 6MF25KTS 6"x25'
196157 6MF35KTS 6"x35'
197158 7MF25KTS 7"x25'
197159 7MF35KTS 7"x35'
198160 8MF25KTS 8"x25'
198161 8MF35KTS 8"x35'


Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.


About The Manufacturer:


Selkirk products set themselves apart from the competition with their proven quality, safety, ease of installation, and lasting performance.  Selkirk is one of the most trusted brands in the industry because we stand behind everything we do.  From assisting with product selection, providing education and installation assistance, to our industry-leading warranties, we ensure your success every step of the way.

Order Confirmation:

Upon placing your order, you will promptly receive an email confirmation. Subsequently, we will conduct a thorough inventory check to ensure all items are in stock and available for immediate shipment. If your order aligns with the advertised delivery timeframe, we will promptly process it for shipment to our warehouse. In cases where the expected delivery time extends beyond the advertised timeframe, we will reach out to you via email and/or phone for confirmation.

Order Shipment:

Within one business day of your item being shipped, you will receive an email confirmation containing a tracking number. If you do not receive tracking information within six business days of placing your order, please don't hesitate to get in touch with us for assistance.

Estimated Time of Arrival:

Our typical delivery timeframe ranges from 2 to 10 business days. Custom-made products generally require 3 to 5 weeks for delivery. If the expected delivery date for your order would fall outside of the advertised 2-10 business day time frame, our customer service team will contact you to ensure your agreement with the revised timeline.

Covered Areas:

Please note that all estimated delivery dates and shipping costs advertised on our website apply exclusively to the Contiguous United States. For inquiries regarding shipping to Hawaii or Alaska, kindly reach out to our customer service team. While we do not offer direct shipping to Canada, we are more than willing to ship your order to the freight carrier of your choice.


It is very important that you inspect the packaging of your items when they arrive and check if you received all boxes listed on the delivery receipt. If you notice any damage or shortage of packages, you must make note of it on the bill of lading, take pictures, and refuse delivery. Your note should say "refused due to damage". You must also take photos of all sides of the box and send them to us within 2 days. If there are no damages visible before opening the box, you must note "subject to further inspection may contain concealed damage". If you notice any damage after receiving the delivery, do not throw the box away, and contact us with the photos. After we receive information from you about the refused delivery or concealed damage, we immediately initiate a claim with the shipping company or with the manufacturer. After the claim is fully processed, we ship all replacements at absolutely no cost to you.

Cancellations & Refunds:

We offer free order cancellations before the shipping label or Bill of Lading is generated, or prior to the commencement of production for custom orders. Please note that custom-made items are not eligible for refunds once production has begun. To be eligible for a return, the item must be unused and in its original condition, with all packaging intact and in perfect condition. Orders delivered outside of the United States are not eligible for refunds. If your order arrives damaged, please refer to the "Damages" section. Our refund policy extends for 30 days. If 30 days have elapsed since your purchase, regrettably, we cannot process a refund. Prior to returning an item, please contact us to discuss shipping details. All refunds will be credited to the original credit card or PayPal account used for the purchase, within two days of receiving the returned items at our warehouse.

Please contact for any questions regarding shipping time.

At Belleflame, we're committed to providing our customers with the best prices on the market. That's why we offer a 110% best price guarantee. If you find a better deal on the same product somewhere else, just let us know and we'll beat it by an additional 10%.

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Here's how it works:

  • Find a lower price on the same product from another retailer.
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It's that simple! Our 110% best price guarantee ensures that you'll always get the best deal possible when you shop with us. So, why wait? Start shopping now and experience the difference of shopping with Belleflame.

At Belleflame, we believe that shopping should be simple, stress-free, and most importantly, enjoyable. That's why we work hard to bring you the best products, prices, and customer service in the industry.

Here are just a few reasons why you should choose us:

  • Wide Selection of Products: We offer a vast selection of top-quality products from the leading brands in the industry. No matter what you're looking for, we have something for everyone.
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