4 Inch Shed Flashing kit. 

A heatproof silicone collar to fit the Frontier plus, Traveller and Fintan single skin flue into a shed with a low-angled / flat roof. Can be used with a wide range of structures with solid roofs and incredibly simple to install, coming with the instructions included.

For use on 0-20º roofs. The flexible base ring of the collar can be moulded to the contours of your roof. Simply cut the top of the silicone to the required diameter and secure over the flue. Then fit over the hole in your shed and fix in place with the sealant and screws.

Includes: 
Heatproof orange silicone collar 
Silicone sealant gel 
Stainless steel self drilling screws with plastic caps