WE BUY LAPTOPS Coroplast SIGN 18x24 NEW This sign was silk screened printed at our shop, It can be used indoors or outdoors, There are 2 grommets in the top corners. Printed on Plastic Coroplast with blue & black Corogloss paint. We have been in the sign business for over 37 years! Buyer pays 6.50 Priority Shipping. Thanks for your interest.