Howe, Ind.-based DoubleTree RV LLC was among the RV manufacturers introducing new models at this winter’s National RV Trade Show equipped with a closet-size, infrared Grand RV Sauna from Grand Packaging Inc., Wayland, Mich. Shown here in a 36-foot DoubleTree Elite Suites fifth-wheel, the Grand RV Sauna also is available as an option from Gulf Stream Coach Inc., Nappanee, Ind., and Dutchmen Manufacturing Inc., Goshen, Ind. The self-venting sauna, with a suggested retail price of $4,000 to $5,000, uses an infrared dry-heating element to raise temperatures up to 150 degrees. Besides OEM installation, the Grand RV Sauna will be available for retrofitting. “People have health issues, and it’s great for that,” said Dan Tauer, DoubleTree national sales manager. “A sauna raises metabolism, burns calories and stimulates blood flow.”