100mm (4 inch) Twin Wall Flue – Insulated Ø100












Insulated twin wall flue with a 100mm inner diameter, made of stainless steel AISI 304. The insulation between the inner and outer wall keeps the flue gases hot, which improves draught and reduces condensation and soot build-up. Twin wall flue is the right choice for external chimneys, unheated lofts and any section of the flue outside the heated room.
Ø100 twin wall flue is used mainly with pellet stoves and pellet boilers, especially for longer vertical runs where a larger diameter than 80mm is recommended.
For a complete installation, see the insulated Ø100 flue kit (3.7m–11.7m). For the connection inside the room, see 100mm single wall flue pipes and the single to twin wall adaptors.