For Sale: Retail-$109,999 Class A - Diesel / Mesa, Az Description: Travel With Ease On The Open Road With This Well Kept 2007 Topical Lx 370 By National. Boasting 37 Feet Of Length, This Class A Diesel Motor Home Features Room For 6 Guests And Huge Triple Slide Outs! Call Today!!! Features: Length Feet: 37