The length of a universal expansion joint is dependent upon the amount of lateral motion to be absorbed by the expansion joint. This is determined on a case by case basis.
![30 inch double hinged expansion joint with duct work](https://usbellows.com/wp-content/uploads/2019/06/hinged-expansion-joint-2-300x225.jpg)
The length of a universal expansion joint is dependent upon the amount of lateral motion to be absorbed by the expansion joint. This is determined on a case by case basis.