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How long do steel sliding or folding doors last?
Although most industrial and commercial products will have relatively limited warranty details, simply because of the unknown and potentially aggressive environments they can be installed into, if they are not abused these doors can outlast most other door types. The only perishable parts are the rubber seals and the actual rolling wheels and bearings.
The simple reason a sliding or folding door can last so long is that the mechanism is simple and there is very little stress on the moving parts. There is almost no door panel contact during operation, just seals maybe. There are no tensioned springs or cables involved which can wear and break. The panels simply glide along in their top or bottom tracking and most of these doors are installed as manual door systems just because they are easy to use and often specified because of the pedestrian traffic rather than having the door fully opened and closed many times a day.
Most good quality steel folding industrial doors have the ability to last 20 - 30 years if they are not abused and kept clean. The maintenance is minimal with no tension springs or cables to check and adjust.