Smartsign K-7631-Beagle-AL-12x18"Beware! - Guard Beagle on Duty" Aluminum Sign, 12" x 18" Heavy-duty, 63 mil thick, rust-proof, recycled aluminum Printed with 3M inks for designed for outdoor traffic or parking signs. Laminate protects against abrasions, chemicals, and UV rays. Laminate is graffiti resistant Rounded corners, for a professional look Won't bend, to outlast the toughest of storms Large, pre-cleared holes for easy mounting. 18"x12" has four 3/8" mounting holes, set 1.5" from each corner. 1.5" corner radius