When did the Von Duprin 22 Series center case cover design change?

The design changed in April 2020.  The new cover design is backward compatible.  The new covers received new sellable part numbers, and the old part numbers became obsolete. When the change was made, 22 series exit device boxes shipped with the new cover design were marked with a green identifying sticker on the product description label.  This facilitated old vs. new identification for stocking dealers.
 
 
 
 
 
 
 
 

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