Safety sign, danger confined space authorized personnel only, plastic, 7 x 10 features: signs identify and indicate potential, type, and degree of hazards that may lead to accidental injury or property damage. comply in accordance with osha 29 cfr 1910.145 and ansi z535 requirements durable plastic has slight flex that is ideal for indoor and sheltered outdoor environments printed surface has non-glare finish plastic has 50% recycled content with uv inhibitors and good impact resistance rounded corners with 3/16 mounting holes for installation