smartsign stay off grass sign with stake, keep off grass signs for lawn, 21 inches tall stake & sign kit, 10x7 inches aluminum sign smartsign industry leading durability - our 40 mil heavy-duty aluminum signs come with a 10-year outdoor warranty. our signs are laminated with clear uv laminate for enhanced performance. you can clean off graffiti and your graphics are protected. our please, stay off grass sign for lawn uses industry-leading 3m inks and not low-durability inkjet pigments that fade in a year or two. effortless installation - these signs are attached to an 18 inch tall stake making the total length of the sign-stake assembly to 21.5 inches. bend-proof, enamel coated, steel stake has tapered end for easy insertion into ground. the stake can be easily hammered down and necessary hardware for mounting is included in the kit.