Twin Wall (FIRE STOP PLATE) 6"or 150 mm
You should use a Ventilated Firestop when the installed appliance will burn solid fuels, for example wood, coal, etc.
A Non-Ventilated Firestop plate can be used on installations burning gas or oil.
For use on solid fuel and gas/oil appliances. eg: woodstoves, gas coal effect fires, oil boiler and any solid fuel appliances.
Outer skin is made from 304 grade stainless steel and is 0.4mm thick. Inner skin is made from 316 grade stainless steel and is 0.4mm thick. Insulation is compressed rockwool giving a density of 128kgper cubic metre. All parts are fully welded.
Distance to combustibles is 60mm.
KC is HETAS Approved and is CE marked.
EN1856-1 T600 N1 D V2 L50040 G60.
KC Twin Wall Insulated Chimney parts are secured together by using a Locking Band.
Make sure that you keep a distance of 60mm from the outside of the flue to any combustible material (wood, plaster board).