Low-energy consumption aluminum alloy grade B fireproof window

A primary advantage of low-energy aluminum alloy Class B fire-rated windows is their balanced performance in fire protection and energy efficiency—addressing two key priorities for modern building design. In terms of fire safety, as Class B fire-rated products, they meet rigorous requirements: during a fire, the window frame and glazing work together to resist the passage of flames, smoke, and hot gases for at least 30 minutes (and up to 60 minutes for higher-spec models). This provides critical time for building occupants to evacuate and for firefighters to respond, reducing the risk of fire spread between rooms or floors. Unlike Class A fire windows (which offer longer fire resistance but are heavier and more costly), Class B windows strike a practical balance for applications where moderate fire protection is sufficient—such as residential buildings, small commercial spaces, or secondary escape routes. In terms of energy efficiency, the thermal break frame and energy-saving glazing…