Z M Furniture & Interior Designer Provides on of the best Sliding Doors And Window in Wakad, Pashan, Koregaon park, Kothrud, Karvenagar, Pisoli, Undri. A sliding window is a window that opens by sliding horizontally along a top and bottom track in the window frame. It is somewhat similar to a double-hung window, just turned on its side. Sliding windows are available in a few different configurations to choose from, based on what would be best for your home.