Commercial spring systems are always custom made. There are many different types of door systems like high lift spring system or a straight vertical spring system that require a much larger springs then residential springs.
LONGER LASTING SPRINGS
Most commercial doors are used a lot more frequently by workers or customers. This typically requires a longer life cycle. For our parkade doors we can make springs have 30,000 cycles or 100,000 cycles depending on the usage of the door. Longer lasting springs means less labor to constantly change them every 6 months.
Duplex Springs are vary complex spring systems that have a 3 inch spring installed inside of larger 6” spring. They are used to lift very heavy doors within a smaller space. They can also be used for higher spring cycles when needed. We have all our commercial springs custom made to properly suit each application.