The Peterbilt 379, 330, 357, 359, 375, 377, 378 ZenEclipse Grey Door Window And Peeper Window Cover Set is a practical and efficient solution for your truck. This set includes driver and passenger door window covers, as well as a peeper window cover. Made with 7 quilted layers, including an aluminum radiant heat barrier, 1/4 inch foam, and 3 layers of polyester, these covers provide excellent insulation and protection. With a quick and easy installation process, these covers fit most Peterbilt 379 2 piece door windows with vent 2004 and prior, 330 2005 and prior, and 357/359/375/377/378 all years. Made in the USA, this set is a reliable choice for any truck owner.