2018 entegra coach cornerstone 45f 2018 entegra coach cornerstone 45f 44' class a motorhome. cummins 605hp diesel engine. 4 slide outs 4 awnings sleeps 8 triple a/c units leveling system. elevate your travel experience with the 2018 entegra coach cornerstone 45f the epitome of luxury and performance in the world of class a diesel motorhomes. exterior length 45 feet engine 600 hp cummins isx15 diesel engine chassis spartan k3 tag axle chassis for superior stability and handling construction high-gloss full-body paint with frameless tinted dual-pane windows four slide-outs expand....