Safety label, danger confined space enter by permit only, adhesive vinyl, 5/pk, 3-1/2 x 5 features: flexible safety labels adhere to small locations to identify and indicate potential, type, and degree of hazards that may lead to accidental injury or property damage. complies in accordance with osha 29 cfr 1910.145 and ansi z535 requirements. printed matte surface has permanent acrylic adhesive back moisture-resistance for indoor or sheltered areas square corners with scored liner back for quick peel-off to apply available 5 labels per package.