The Window Sash Prop provides universal, repeatable training for horizontal and vertical window clearing operations. Designed for integration into NFPA 1402-compliant Class A training structures, this prop mounts directly into standard window openings to simulate realistic sash removal, ventilation, and glass clearing techniques. Compatible with multiple window orientations, it allows firefighters to practice hand-tool strikes, glass management, and frame clearing in both residential and commercial-style setups. Built from heavy-gauge steel with replaceable inserts, the Window Sash Prop delivers consistent, safe, and realistic training for primary ventilation and rescue access scenarios.