Sill (for exterior doors) – A horizontal sill plate below the door that supports the door frame. Similar to a Window Sill but for a door The surface treatment substances used by BELFA, penetrates the structure of the tree and provides protection against harmful bugs for many years to come. https://active-bookmarks.com/story14768775/hakk%C4%B1nda-villa-kap%C4%B1s%C4%B1