Genuine Coleman Mach OEM replacement rooftop shroud for 4500 series Mach 10 low-profile air conditioners. Co-polymer polypropylene construction — UV resistant, impact resistant, and paintable. Arctic White. 38" L × 26-1/10" W × 11-4/5" H. 10 lbs. 90-day limited manufacturer warranty.
The Coleman Mach 45203-5261 is the factory replacement rooftop shroud for the 4500 series Mach 10 low-profile RV air conditioner. The shroud is the exterior housing that covers the rooftop AC unit — protecting the internal components from weather, UV exposure, road debris, and physical impact while also shaping the airflow over the condenser section. A cracked, broken, or UV-degraded shroud should be replaced promptly to maintain protection and preserve the aerodynamic profile of the unit.
The 45203-5261 is manufactured from co-polymer polypropylene — the same material used on the original unit. Co-polymer polypropylene offers improved UV resistance and impact strength compared to standard polypropylene, and the material is paintable for owners who want to match a custom exterior color. The shroud retains the Mach 10's signature low-profile shape and fits 4500 series units with the 45XXX-XX6X model number pattern.
Factory-correct dimensions and mounting configuration for 4500 series Mach 10 units — direct replacement, no modification required
Co-polymer polypropylene construction offers better UV protection and impact resistance than standard polypropylene — built for rooftop RV exposure
The polypropylene material is paintable — accommodates custom color matching for owners who want to coordinate with the RV exterior
Maintains the Mach 10's low-profile rooftop footprint — the same streamlined shape as the original for clearance and aerodynamics
The 45203-5261 fits Coleman Mach 10 units in the 4500 series with model numbers following the 45XXX-XX6X pattern. It is not compatible with other Mach 10 series or other Coleman Mach rooftop unit families. Your unit's model number is on a label on the AC unit itself — typically on the underside of the rooftop unit or inside the ceiling assembly. Verify the model number before ordering to ensure correct fit.
The 4500 series Mach 10 replacement shroud is available in three colors. All share the same low-profile shape and co-polymer polypropylene construction: • 45203-5261 — Arctic White (this item) • 45203-5291 — Black • 45403-5291 — Polished Black For 9000 and 4900 series Mach 10 units, see replacement shroud p/n 9203-5261 — different series, different shroud.
All three 4500 series color variants are direct-fit replacements for the same unit family. Choose the color that matches the original shroud or the RV exterior finish. The 9203-5261 is for a different series and is not interchangeable.