Take fun and adventure to the max in the 2008 EnduraMax Max 40 SURV Towable. Equipped with a 36-inch wide entry door – one of the largest in the industry – the Max 40 is built using a 12-inch I-beam main frame, aluminum cage construction on all six sides and vacubonded sidewalls complete with a high-gloss gelcoat. When you’re not tearing it up, relax in style in this EnduraMax SURV towable. Interiors come fully loaded with Comfort Plus innerspring furniture, a large sleeping loft, and hardwood cabinet frames and doors. Other features include an anti-theft locking system on the ramp doors and LED lights on the exterior. EnduraMax RV.