Marks hardware - This is used with a two-piece handleset

Can be used in place of a mortise cylinder on the interior side of a Marks 22 or 9225 series mortise lock

Changes function of lockset from keyed on both sides (AC function) to keyed on one side with a thumb turn on the other (F or FW function)

Overall Height: 2-3/4 inch
Width: 1-1/4 inch at spindle to 1-7/8 inch maximum
Spindle: 3/16 inch Square
Thumbturn: Oblong Shape

Available colors: polished brass, antique brass, brushed/satin chrome