The Kenworth T400, T450, T600, T800, W900 Tan ZenEclipse Tan Door Window Cover Set 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 set provides excellent insulation and protection. With its easy installation using suction cups, it fits most Kenworth T400, T450, T600, T800, W900 models. Made in the USA, this window cover set is a reliable and efficient solution to keep your truck's interior comfortable and shielded from external elements.