This adjustable gate works in areas that have space or railing limitations, allowing you to protect employees even in hard-to-protect areas. It meets all OSHA, ANSI and Canadian COHS requirements for fall protection, and a hot-dipped galvanized finish protects against corrosion. The self-closing spring design provides a soft close to reduce noise and minimize wear and tear, and the spring is guaranteed for the life of the gate. This model protects openings from 11" to 15".