Smartsign S-0393-AL-10 Aluminum Sign,"Caution: Pregnant Women Should Not Enter" with Graphic, 7" x 10" Heavy-duty, 40 mil thick, rust-proof aluminum. Made of 96% recycled materials Durable, plastic laminate protects against weather, abrasions, and chemicals 4 mounting holes for screws or nails. Rounded corners for longer life and simple installation For indoor or outdoor use 10"x7" sign has four 3/16" mounting holes, set 1/2" from each corner. Sign has a 1/2" corner radius