These are 250mm x 250mm square sealing plates to suit wood burning stove flue pipes. Included is a heat proof rope which simply squashes into the gap between the collar & pipe to seal your flue, also included are 4 self drilling screws to fasten to your existing plate.
This collar and plate would be used to seal an existing plate that may have only had the hole for the flue pipe and then filled with fire cement, which generally leads to the cement cracking made from 2mm galvanised steel
The collar is heavy duty 2mm steel tack welded to the plate
4 self drill screws are provided
1 cartridge of heat resistant silicone 300 degrees c
and 1 tin of heat resistant paint matt black 400mml.
Just use the drop down box to choose which flue size you require