Build it for your future RV today.
Use the metal RV port configuration tools to get the most you can for the dollar - increasing size does not increase price until you pass a next standard dimension.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.