Frequently Asked Questions About Mack CH/CHN/CHU Truck Roof Trim

Will this roof trim fit my specific Mack CH model year?

Our Mack CH/CHN/CHU roof trim is designed to fit models from 1988 through 2009. This includes all CH, CHN (set-forward axle), and CHU (set-back axle) variants. However, some mid-2000s models with factory-installed aerodynamic packages may require minor modifications. We recommend checking your VIN or contacting us with your truck's specific year and configuration to ensure proper fitment.

What material is the roof trim made from, and how durable is it?

Most of our Mack CH roof trim options are manufactured from either 304-grade stainless steel or heavy-duty ABS plastic with chrome plating. Stainless steel versions offer superior longevity and resistance to rust, typically lasting 10-15 years with proper care. Chrome-plated ABS options are more budget-friendly and lighter weight but may show wear after 5-7 years depending on exposure to road salt and weather conditions.

Can I install the roof trim myself, or do I need professional help?

Installation typically takes 2-3 hours and can be completed by someone with moderate mechanical skills. The trim usually attaches using existing mounting holes, though some models may require drilling. You'll need basic hand tools, a drill with metal bits, and ideally a helper to hold the trim in place during installation. Many customers successfully complete the installation themselves, but if you're uncomfortable working at height or drilling into your cab, professional installation is recommended.

What styles and finishes are available for the CH roof trim?

We offer several styles including straight edge, curved profile, and aerodynamic designs. Finish options include mirror-polished stainless steel, brushed stainless, chrome-plated, and powder-coated black. The most popular choice is the 5-inch curved profile in polished stainless, which complements both classic and modern Mack styling. Some trim pieces also feature integrated LED marker light cutouts for enhanced visibility.

Why is there a gap between my roof trim and cab after installation?

Small gaps (1/8 to 1/4 inch) are normal due to manufacturing tolerances and cab variations. If you're experiencing larger gaps, the trim may need slight bending to match your cab's contour - this is particularly common on older CH models where the cab may have settled. Using weather stripping or trim seal tape behind the mounting surface can help achieve a tighter fit and prevent water intrusion. Excessive gaps may indicate you have the wrong trim model for your specific cab configuration.