US Carports manufactures three metal RV carport shelter roof systems. They are the Vertical, A-frame Boxed Eave, and the Regular Style Carport. The Vertical Roof is the best roof system that we offer. The A-frame Boxed Eave Carport is our mid-grade roofing system. The Regular Style Carport is our economy unit. Displayed below are all three styles of metal carports that we offer.