This heavy-duty "No Parking on Grass" traffic control sign clearly indicates your rules and intent for traffic flow. This sign is made of .080" rustproof aluminum with a highly reflective surface that provides added visibility in low-light conditions. Screen-printed with UV-resistant inks prevent fading and lets you get your message across day or night. Pre-drilled holes in top and bottom of sign allow mounting on U-channel steel posts,, with holes on 1" centers. 18"H x 12"W.