SKU: 35804349047

Adjustable 350-530mm 6" Twinwall Black

Sale price$95.49 Regular price$106.10
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Adjustable 350-530mm 6" Twinwall BlackDINAK DW 255 Inner Diameter 150mm, external diameter 210mm. 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 150mm, external diameter 210mm.

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: 35804349047

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4.2 ★★★★★
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Camille Kerry
Port Orchard, US
★★★★★ 5
Sweet dreams.
Helps you relax before bedtime.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
H
Verified Purchase
HEBMD
Bozeman, US
★★★★★ 5
good deal
Very inexpensive way to take melatonin
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Reviewed in the United States on May 23, 2026
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Verified Purchase
Diana H
Massapequa, US
★★★★★ 5
Perfect for low dose, great price
On my second bottle, great product for the cheap price, lasts almost a year. Hard to find in this low dose. I personally find low dose melatonin to work better than the higher amounts. It’s the sweet spot.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
S
Verified Purchase
Strategos
Dallas, US
★★★★★ 5
Knocks me out cold
I wish I could easily find a lower dose, but this works. Take one about 30 mins before I want to sleep and when I fall asleep I don't wake up in the middle of the night. I normally have insomnia but one of these generally gives me 9 hours of sleep. It doesn't ALWAYS work (I have health problems that can keep me awake) but instead of 5-7 hours sleep I am consistently getting around 9. The only problem is I'm groggy in the morning. But I feel a lot less haggard and anxious in the morning now so I think I'll be continuing with this.
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Reviewed in the United States on June 12, 2025
K
Verified Purchase
Katiushka
Port Orchard, US
★★★★★ 5
Very good product
These melatonin pills work. I bought them because sometimes I'm so stressed or pressured by everyday life that I find it hard to fall asleep. I don't use them every day, only when I really can't sleep and it's very late. I must say that this pill doesn't knock you out completely. I liked that. You fall asleep slowly, and the next day you don't feel groggy or like you've had too much to drink. It's a great product!
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Reviewed in the United States on September 7, 2025

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