440 Length 5" Twinwall
Inner Diameter 130 mm, external diameter 190mm.
(note: effective length of the 500mm section when pushed together is 440mm)
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.
Note: a locking band is required at each joint in the twinwall system.
-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