Just had one installed by Superior Carports. www.superiorcarports.com
16 x 41 with 12ft legs. Three sides are covered down to 7' from grade, added anchors and braces for wind load. Was $3800 installed. We went with the wider width so we can extend the slides and open all compartments while parked.
38ft 2008 Damon Daybreak 3575 (forward kitchen)on Ford 22,000lb chasis, 242" WB.