Is it allowable to convert one exit device to another type of exit device?

Once a UL panic or fire label is applied to an exit device, the types of modifications that are allowable are very strictly controlled.  UL does not allow exchanging components to reconfigure a device's identity.  For example, it is not allowable to convert a rim device to a vertical rod device by removing and replacing parts.  However, there are some UL approved conversion kits, such as double-cylinder center case kits, or electric latch retraction conversion kits.

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