The Kenworth T400, T450, T600, T800, W900 Tan ZenEclipse Tan Door Window Cover Set with Peeper Window Cover is a practical and beneficial product for Kenworth truck owners. Made with 7 quilted layers, including an aluminum radiant heat barrier, 1/4 inch foam, and 3 layers of polyester, this window cover provides excellent insulation and protection. It is easy to install with suction cups and fits most Kenworth T400, T450, T600, T800, W900 models. Made in the USA, this window cover set is a reliable and efficient solution for maintaining privacy and reducing heat transfer.