A UL 10C door lock certification confirms that a fire rated door lock has been independently tested to withstand positive-pressure fire conditions — the most rigorous fire-door standard used in U.S. commercial construction. Purchasing a lock from a supplier who falsely claims this certification puts

Fire-rated door openings represent one of the most critical life-safety components in any commercial building project. When the specification process goes wrong, the consequences extend far beyond compliance issues—they directly impact occupant safety, project timelines, and overall liability exposu