Selkirk - 6" to 8" Round Trim Collar (UltimateONE)

SelkirkSKU: 6U1-TC

Sale price$307.81
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Size: 6-Inch
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.


In the realm of chimney excellence, Selkirk presents the UltimateONE 6" to 8" Round Trim Collar, a beacon of innovation and reliability. This essential component is not merely a trim collar; it's a testament to meticulous craftsmanship and cutting-edge engineering. Designed for non-combustible wall installations, this collar effortlessly closes off spaces around pipes, ensuring a secure and polished finish.

Crafted with a matte black finish, the Selkirk Trim Collar seamlessly blends functionality with aesthetics. It's a subtle touch that elevates the visual appeal of your chimney, making a statement without compromising safety. But the true magic lies within the UltimateONE Chimney system, where precision and durability converge to redefine your chimney experience.

The UltimateONE's inner liner and outer casing boast an all-welded 304 stainless steel construction, delivering unparalleled strength and corrosion resistance. The innovative web coupler design, with 1" of Superwool insulation, creates a continuous column of protection, setting a new standard in safety protocols. This design not only facilitates pipe expansion but also eradicates cold air infiltration, ensuring a chimney that performs impeccably in every aspect.

Forget the hassle of intricate installations – UltimateONE simplifies the process with a latch-type locking band, allowing for a tool-free setup that's not only quick but also rock-solid and secure. This collar is not just an accessory; it's a crucial element in the UltimateONE system, offering adjustable lengths for seamless installation and compatibility with various support kits. The 6" to 8" diameter range caters to diverse needs, while the Smart Choice Warranty underlines our commitment to your satisfaction.

Your chimney deserves the UltimateONE experience – where style meets safety, and every detail is a testament to uncompromising quality.


  • Seamless Trim: Achieve a polished finish with the matte black trim collar that seamlessly closes off spaces around pipes.
  • Superior Strength: 304 stainless steel inner liner and outer casing ensure unmatched strength and corrosion resistance.
  • Continuous Protection: The web coupler design with 1" Superwool insulation creates a continuous column of protection.
  • Easy Installation: The latch-type locking band allows for quick, tool-free installations that are solid and secure every time.
  • Expandability: UltimateONE facilitates pipe expansion, eliminating concerns about cold air infiltration.
  • Versatile Sizing: The 6" to 8" diameter range accommodates various chimney configurations.
  • Smart Choice Warranty: Enjoy peace of mind with our Smart Choice Warranty covering all components.


  • Matte Black Finish: Enhance your chimney's aesthetics with a stylish matte black trim collar.
  • All-Welded Construction: Inner liner and outer casing made of all-welded 304 stainless steel for superior durability.
  • Superwool Insulation: 1" solid pack Superwool insulation ensures continuous protection and optimal performance.
  • Adjustable Lengths: Easily customize the installation with adjustable lengths for a perfect fit.
  • Tool-Free Installation: The latch-type locking band enables quick and secure installations without the need for tools.
  • Multiple Support Kits: Compatible with various support kits, providing flexibility in installation options.
  • Smart Choice Warranty: Confidence in quality with our Smart Choice Warranty on all components.


  • Product Code: 6U1-TC
  • Part No: 0843806 (6-Inch), 0843807 (7-Inch), 0843808 (8-Inch)
  • Construction: 304 Stainless Steel Inner Liner, 304 Stainless Steel Outer Wall
  • Insulation: 1" Solid Pack Superwool
  • Compatibility: All Residential Fuels
  • Diameter Range: 6" to 8"
  • Warranty: Smart Choice Warranty on all components
Product Code
Part No Size
6U1-TC 0843806 6-Inch
7U1-TC 0843807 7-Inch
8U1-TC 0843808 8-Inch

Warranty: 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.

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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.

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