I understand these slides are usually for lighter indoor use but due to the cost I decided to give it a go couple of times to try for my hangar doors. I walled them in concrete. They run the narrow (1 1/2") side of the 2x4 with no problem. They turn out to be durable enough to work properly and I don't expect them to fail anytime soon. Perhaps the lubrication could the wheels may be an issue.Release in a few years but will keep an eye on it.
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