The Mack DM, R and U600 Models Winterfronts are a practical and reliable solution for protecting your Mack DM600S, DM600SX, R and U600 Models 1974-2000 during the winter months. Made with a heavy-duty white vinyl material, these winterfronts are designed with a fixed center and come with a mounting hardware kit included. With snaps for easy installation, these winterfronts require drilling and are sold individually. Keep your Mack truck protected and ready for the cold weather with these durable and convenient winterfronts.