SIGN DANGER CONSTR. AREA KEEP OUT 14x10 .040 ALUM B&R/W. Construction areas are dangerous for unprepared individuals. That's why this sign is essential for this type of area. Made from rectangular-shaped aluminum and conforming to OSHA 29, this sign provides an easy-to-read and easy-to-install warning. In addition, the product is UV, chemical and graphite proof.