Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
Storm Collar 4" Twinwall StainlessInner Diameter 100mm, external diameter 160mm. Our superior stainless steel insulated twinwall flue system for use with solid fuel appliances. Dinak has the strongest interlocking joint system on the market today, making it popular with top installers who need to rely on a quality system every time. Select your required parts and add to your cart, or alternatively Use our FREE TWINWALL QUOTATION SERVICE! and we will select all of the required parts to
Inner Diameter 100mm, external diameter 160mm.Our superior stainless steel insulated twinwall flue system for use with solid fuel appliances. Dinak has the strongest interlocking joint system on the market today, making it popular with top installers who need to rely on a quality system every time.
Select your required parts and add to your cart, or alternatively Use our FREE TWINWALL QUOTATION SERVICE! and we will select all of the required parts to suit your system.
Note: a locking band is required at each joint in the twinwall system.
Main Features
• Simple, easy push-fit system
• HETAS Approved
• High mechanical resistance to vertical and horizontal forces
• 60mm clearance to combustibles
• No thermal bridge, insulation continuity throughout the system
• Thermal expansion absorbed in each element
• High working temperature: 600°C under continuous operation
Applications
• Solid fuel appliances, wood and multifuel stoves
• Biomass boilers
• Domestic heating and hot water systems
• Hot air generators
• Bakery ovens
• Ventilation and smoke extraction
• Industrial / commercial heating
Materials
Inner wall: 316L Stainless Steel
Outer wall: 304 Stainless Steel
Insulation: 30mm Rockwool
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
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Product Reviews
★★★★★ 5
Virus Protection
Size: 180 Count (Pack of 1)
Elderberry keeps immune system strong and I have not had cold or flu in over 20 years since I started taking 1 a day. Great prevention
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Quality and cost are great.
Size: 90 Count (Pack of 1)
Quality, quantity and price really works.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Love
Size: 90 Count (Pack of 1)
Was great to boost my immune system
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Good supplement
Size: 90 Count (Pack of 1)
Good supplement. Help boost my immune system.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
I take these daily
Size: 180 Count (Pack of 1)
My husband and I take this religiously every day, especially during cold & flu season. No taste, easy to swallow.
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Reviewed in the United States on January 4, 2026