Embellish your deck or patio with the Cal Metro premium 16.5 in. x 36 in. x 35.50 in. Spa Bar in Smoke. The artisans of Cal Metro have created a selection of custom accessories to enhance the beauty and functionality of any Cal Spas hot tub. Made of worry free synthetic materials. Cal Designs offers surround components in a variety of colors available as individual pieces for mix and match to create your own custom spa environment.