Forge Fire’s Exterior Straight Run Stair System delivers direct, durable access between levels in NFPA 1402-compliant Class A training towers. PE-designed, stamped, and fabricated to support full firefighting tactical loads, this all-steel stair assembly provides a single uninterrupted flight between decks for straightforward, efficient movement during live-fire operations. The open-air design enhances visibility and ventilation while maintaining the structural rigidity required for repeated use under load. Each unit features anti-slip steel treads, heavy-duty handrails, and adjustable mounting points for alignment with Mod Decking, balconies, or upper container levels. Engineered for maximum longevity and safety, the Exterior Straight Run Stair provides dependable performance in all-weather training environments.