UL 325

Standard for Door, Drapery, Gate, Louver, and Window Operators and Systems

This Standard outlines safety requirements for garage doors and similar opening and closing appliances, such as draperies, gates, louvers, windows and exterior awnings and for electric operators and systems. It requires entrapment protection mechanisms such as an inherent reversal system and either an electric eye or edge sensor to help reduce the risk of injury to children, pets and adults.