Kenworth Stainless Steel HVAC Box- Heater/Ac Box Assembly for T600, T800, W900, W900B & W900L - Best Price, FREE SHIPPING & Lifetime Warranty." About Truck Parts Line Fifty years of cumulative industry expertise has made Truck Parts Line the leading provider to the Heavy-Duty Trucking industry. Our Guiding Principles are Environmentally-Conscious-Engineering, Excellence and...