Durable and Safe: All 3 of the wallbed mechanisms that we sell are engineered to ISO 9002 standards, which means you will be purchasing a bed that has passed the most demanding of engineering tests; a bed system that, because of the ISO 9002 rating, is used around the world. Mack Wallbeds are specifically designed to be used on a daily basis without needing constant maintenance and adjustments. Fitted with tempered steel springs, our bed mechanism is qualified to perform flawlessly for as long as you own it.