Fire-resistant window model numbers consist of the product name, specifications, function, and fire resistance rating. For example:
1. A fire-resistant window model number of MFC 0909-D-A1.00 (Class B) indicates a wooden fire-resistant window with an opening width of 900mm, a fixed function, and a fire resistance rating of A1.00 (Class B).
2. A fire-resistant window model number of GFC-1521-H-C2.00 indicates a steel fire-resistant window with an opening width of 1500mm, a height of 2100mm, a movable function, and a fire resistance rating of C2.00.
