Double and single hung windows consist of two separate window panels. The bottom window slides up to open. On a double hung window, the top half also slides down. In a single/double hung window, the guard is usually installed so the bars are horizontal and cover the entire width of the window. |
|
Sliding windows consist of two separate panels that slide horizontally to open. Windows with one panel that slides are single sliders (*) and windows in which both panels slide are called double sliders (**). |
Casement (or awning) windows consist of one or two separate panels that crank open. The panels either open outwards to the side or outwards and up. In both cases, the entire window must be guarded. |