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- USA
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
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Description
Adjustable length 530-880 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
4.3 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 4
Nice, but a little snug
Size: Large, Color: Navy 177
I like the material, it does a better job than most shirts of being wrinkle free. The sizing is a bit small, I have a gut and if feels snug, whereas my other shirts (mostly LL Bean) do not.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Shirt
Size: Large, Color: Blue Red White 161
Wonderful shirt. Great fit.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Will by again
Size: Large, Color: Black 176
Perfect fit and looks great
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Reviewed in the United States on May 24, 2026
★★★★★ 3
Nice shirt!
Size: X-Large, Color: Blue Red White 161
A very nice checked shirt. It is mostly iron free. The material, although cotton has a stiff feeling. If you forget that drawback, it's a nice shirt. So reasonably priced.
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Reviewed in the United States on February 21, 2026
★★★★★ 5
Run small.order a size larger
Size: X-Large, Color: Blue White 168
Nice quality shirt. Had to return fo that sizing chart was little off. They ran a little small in length and in the chest.
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Reviewed in the United States on April 23, 2026