- Lakeshore RV Center Dealer to the World!br br This Montana RV Fifth Wheel model 3700 RL by Keystone RV is a 38” Triple slide. br br Lakeshore RV price guarantee. No RV Dealer in the Nation can beat our price on br br any Montana RV. We offer 24-hour transportation with guaranteed service after br br the sale.br br Call Bob Woodard at 231-788-2040 or see our large selection of RVs at Lakeshore br br RV Center - your Montana RV dealer to the world!br br Click here to see additional info on the Montana 3700RE RV br br Click here to see additional info on Montana RVs: br rv.comcfshopmastproductresultsp.