This window sash lock is constructed from diecast zinc and comes finished in a white painted color. It features a heavy-duty design with alignment lugs and cam-action locking. This sash lock is used on vertical sliding single & double hung vinyl windows and it is used by many window manufacturers. The mounting holes for the lock and keeper of this item are spaced apart at 2-1/8 in. when measured from center to center. All fasteners are included with this item.From the ManufacturerThis sash lock is constructed from diecast and comes finished in white. It features a cam action hook which draws the keeper tight when locked. The latch body has anti-jimmy studs which engage the keeper. This is a very popular latch for single and double