SKU: 70590321531

140mm Length 5" Twinwall

Sale price$32.29 Regular price$35.88
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

140mm Length 5" TwinwallDINAK DW 255 Inner Diameter 130mm, external diameter 190mm. 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

DINAK DW 255

Inner Diameter 130mm, external diameter 190mm.

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:
  1. 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
SKU: 70590321531

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Bill
Lake Worth, US
★★★★★ 5
Quality.
Color: Light Blue, Size: X-Large
Fit great love the color warm and soft.
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Reviewed in the United States on March 23, 2026
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CATHERINE CABASSA
Fort Morgan, US
★★★★★ 4
Looks great buy too short
Color: Red, Size: 4X-Large
Purchased for my son for a Christmas event at his job. He is 330pds and 6ft tall so I got the 4xl for him. It's fits perfectly in width BUT it's short. I know because he is tall I should have searched for a 4XLT but could not find one in the colors needed. But I purchased a white 4xlt tee for him to wear underneath and leave the shirt open it's looks great. So great shirt comfy and cozy well made and colors exactly as shown but if you are on the taller side maybe wear it as an over shirt with a tee underneath.
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Reviewed in the United States on December 15, 2025
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Kamohomoho
Battle Creek, US
★★★★★ 5
Well made, warm.
Color: Brown, Size: X-Large
A heavy yet soft flannel shirt. Nice on a foggy or light misty day. Flannel is a bit loosely woven but well sewn. Size reflects its lable. Its become a 'got to' shirt this fall.
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Reviewed in the United States on January 9, 2026
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Hannah
Belleville, US
★★★★★ 5
Quality look
This is my second purchase of this shirt. Soft, thick, good quality. Usually worn open with a tee underneath. Sizing is normal and a good length. But it could also be tucked in. Looks great!
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Reviewed in the United States on February 8, 2026
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MakinLee
New York, US
★★★★★ 5
Great shirt
Color: Khaki, Size: XX-Large, Color: Khaki, Size: XX-Large
Wonderful shirt. Bought this for my husband to wear for family photos and it fit great, wasn't scratchy and he was so comfortable in it he actually wears it to work sometimes even to this day. I would buy this brand again. It washed it before he wore it, I didn't notice any shrinking.
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Reviewed in the United States on February 16, 2026

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