Adams Rite Mortise Lock 22.5 Degree Slot - Round Face Emtek Norwich Knob With Ribbon & Reed Rosette - E89 Large knuckle and pin are

Large knuckle and pin are similar to original Atrium Door Hinge

left without unscrewing (done with a screwdriver through the slot on the face of the case)

Specifications Colors of plastic key head covers: black

Model: 850-2492491

Middle Keeper 854-13896

Adams Rite Mortise Lock 22.5 Degree Slot - Round Face Emtek Norwich Knob With Ribbon & Reed Rosette - E89 Large knuckle and pin arePart Number: 15024 This Mortise Lock has a 1 2 inch (12. 7 millimeter) wide steel housing with a Round end face plate. The hook projection is adjustable and the keyway is in the 22 1 2 degree position with the hook fully extended. Fits: Adams Rite Sliding Doors. Latch: steel Faceplate: Round Keyway Slot: 22 1 2 Degree ( 22. 5 ) Screw Hole Spacing: 3 11 16 inch, (93. 7 mm) Center to Center Screw Holes Related Adams Rite Parts: 14328 Non Keyed Adams