Silvacore Pro by Duraflue REMOVABLE 50cm length: connects directly into stove (snout downwards): 5", 6", Silver, Black.Connects directly into stove (has its own snout so no adaptor required) and allows the stove to be removed if required. Building Regulations does state stove should be removable without dismantling rest of chimney. This is a twin wall clip together chimney part used to build a new chimney. Twin wall clip together chimney can be as close as 5cm to combustible materials (7cm if passing through a sealed void). No glue or sealants required. When we say 5