A fixed panel window, also known as a picture window, is a non-operable window that does not open or close. It consists of a single glass pane set within a frame, designed to provide an unobstructed view.

Openable refers to something that can be opened. It’s an adjective used to describe objects, files, or interfaces that are not sealed or locked permanently and can be accessed, unfolded, or activated.

A sliding window is an openable window that operates by moving one or more sashes horizontally along a track. Known for their sleek design and ease of use, sliding windows.

A hybrid window combines different materials—typically aluminum on the exterior for durability and weather resistance, and wood or uPVC on the interior for insulation and aesthetics.