As a general answer QEL-22 Rim Device can be cut down to fit on a 31.5" wide door opening width. There is a chart in the Von Duprin 22 Series Catalog (page 18 of the 6/22 revision) that lists more detailed information concerning QEL-22 Rim device minimum door opening widths based on the specific Stop Height, Strike used, and Mullion used (if a double door).
A QEL2227 Surface Vertical Rod Device can be cut down to fit on a 30.5" door opening width.
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