Fireproof window is a window composed of fireproof glass and window frame, which can isolate the temperature and prevent the spread of fire within a certain range when encountering fire. According to different materials, fire windows are mainly divided into steel and wooden types. Depending on functionality, they can be classified as fixed fire windows or open fire windows. The main glass types include grout fireproof glass, single piece of cesium potassium fireproof glass, and composite fireproof glass.

1. The window frame should use steel and wood frames to ensure stability and component integrity.
2. Wooden frames must meet general technical conditions for fire doors; internal filling materials must be non-sexual (non-combustible).
3. Glass selection must not affect fire resistance; light transmittance cannot be less than ordinary flat glass.
4. Hardware accessories must undergo quality testing and meet high-strength requirements.

The scope of application for Class A fire windows is very wide. It can be used for exterior walls of buildings with relatively dense floors, fire isolation in stairwells, and fire partition wall isolation.