The Mack 4 Inch Cab Conversion Kit is a practical and efficient solution for enhancing your Mack truck. This kit includes a 4-inch cab extender, pre-assembled fiberglass panel, and pre-installed bracing for a precise fit. It also features a window, pre-installed sound deadening core, and OEM upholstery for added comfort. With its CNC cut and drilled panel, this kit ensures a perfect fit every time. The class A gel coat finish adds a sleek and professional look to your truck. Compatible with various Mack models, this kit comes with all the necessary hardware and sealer for easy installation.