The Balnea is built on an extruded aluminium frame coated with baked-on enamel paint (white or beige) that will neither rust nor peel. The 22-ounce mould-treated vinyl canvas has a lifespan of 15 to 18 years and remains installed year round. Its vinyl panels are heat-sealed together to make the canvas that much more efficient. The Flash System, our patented non-lacing fastening system, allows you to apply the optimal canvas tension to the frame. The polymer windows can be removed for easy maintenance. We recommend cleaning them with a mild, non-abrasive soap diluted in a large quantity of water.