Selkirk - 6" to 8" Alternate Attic Insulation Shield (UltimateONE)

SelkirkSKU: 6U1-AAIS

Sale price$229.71
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Size: 6-Inch
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.


Selkirk introduces the UltimateONE Attic Insulation Shield, a game-changer for chimney insulation. Tailored for 6" to 8" diameters, this shield serves as a versatile alternative to the standard AIS when dealing with an open attic above a Round Ceiling Support. Crafted to perfection, it seamlessly fits over the Round Ceiling Support, accommodating Universal Shielding Insulation (SUSI/JUSI) with ease.

Designed for convenience, the UltimateONE Attic Insulation Shield adjusts to insulation depths of up to 16.5". This not only enhances your chimney's efficiency but also ensures a snug fit for optimal insulation performance. The inclusion of an AIS Storm Collar adds an extra layer of protection, fortifying your chimney against the elements.

The UltimateONE Chimney boasts a robust construction, featuring an inner liner and outer casing made of welded 304 stainless steel. This ensures superior strength and corrosion resistance, promising longevity and durability. The innovative web coupler design, complemented by 1" of Superwool insulation, creates a continuous column of protection, eliminating weak points and enhancing performance.

With adaptability in mind, UltimateONE allows for pipe expansion, effectively eliminating cold air infiltration. The latch-type locking band ensures a tool-free, quick, and secure installation every time. This not only streamlines the installation process but also guarantees a solid and dependable chimney system.


  • Seamless Alternative: Perfect substitute for regular AIS, ideal for open attics.
  • Adjustable Insulation Depth: Accommodates up to 16.5" insulation for enhanced efficiency.
  • Superior Materials: All-welded 304 stainless steel construction for strength and corrosion resistance.
  • Continuous Protection: Innovative web coupler design with 1" Superwool insulation.
  • Easy Installation: No-tool, quick, and secure installations with latch-type locking bands.
  • Cold Infiltration Elimination: Engineered to eliminate cold air infiltration, ensuring a consistently warm environment.
  • Smart Choice Warranty: Ultimate peace of mind with a warranty covering all components.


  • Fits 6" to 8" Diameters: Versatile sizing for various chimney systems.
  • AIS Storm Collar Included: Additional protection against the elements.
  • 304 Stainless Steel Inner and Outer: Ensures durability and corrosion resistance.
  • Adjustable Lengths: Facilitates easy and customizable installations.
  • Multiple Support Kits: Tailor your chimney system with various support options.
  • Smart Choice Warranty: Comprehensive coverage for worry-free usage.


  • Product Code: 6U1-AAIS
  • Part No: 0843506
  • Size: 6-Inch
  • Material: 304 Stainless Steel
  • Compatibility: All residential fuels
  • Insulation: 1" Solid Pack Superwool
  • Warranty: Smart Choice Warranty on all components
Product Code
Part No Size
6U1-AAIS 0843506 6-Inch
7U1-AAIS 0843507 7-Inch
8U1-AAIS 0843508 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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      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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