Whether building, renovating, or just trying to expand your window and door vocabulary, learning the different parts of a window is a useful step. Here is the anatomy of a window: 1. Head – the main horizontal member forming the top of the window frame. 2. Argon Gas – a colourless inert gas that is injected in the airspace of an insulating glass unit to improve energy efficiency 3. Frame – the enclosure in which window sash or door panels are mounted. 4. Simulated Divided Lites (SDL) – small grille bars placed on the exterior and interior of the glass that divide a window into smaller section. 5. Nailing Flange – fin used to secure the window to an opening 6. Sash – a single assembly of stiles and rails into a frame for holding glass 7. Pane – a framed sheet of glass within a window or door 8.…