The D372 Danger Confined Space Keep Out sign complies with OSHA 29 CFR 1910.145. It's available in 2 sizes - 7"x10" and 10"x14". It's also available in 3 different materials - Sticker, Rigid Plastic, and Aluminum.
All signs are coated with Sign Muscle. A proprietary coating that is graffiti proof and doesn't fade. Because of this, all materials are suited for indoor or outdoor use.