Check the listing for details. Kason OEM 1248 Series Reversible Spring-Assisted Cam-Lift Hinge, Offset: 1-1/2". Condition: New. Listed at 129.00 USD. Brand New Kason OEM 1248 Reversible Spring-Assisted Cam-Lift Hinge, 1-1/2" Offset. Part Number: 1248-C112Spring mechanism adds extra closing force to overcome air resistance on heavy walk-in doors.Special high-lift cam system outperforms similar spring hinges.Cam-rise action reduces gasket wear, even with irregular floors.Build-in dwell holds door open beyong 130 degrees.Simple manual operation reverses hinges for use on right or left opening door.Finish: Chrome!Order the wrong offset hinge, it won't work properly! Kason 1248 Series Spring-Assisted HingesPart Number DescriptionOffset1248-C000Reversible Spring-Assisted Cam-Lift HingeFlush1248-C118Reversible Spring-Assisted Cam-Lift Hinge1-1/8"1248-C114Reversible Spring-Assisted Cam-Lift Hinge1-1/4"1248-C138Reversible Spring-Assisted Cam-Lift Hinge1-3/8"1248-C112Reversible Spring-Assisted Cam-Lift Hinge1-1/2"1248-C158Reversible Spring-Assisted Cam-Lift Hinge1-5/8"1248-C134Reversible Spring-Assisted Cam-Lift Hinge1-3/4"1248-C200Reversible Spring-Assisted Cam-Lift Hinge 2" Recommendations:Screws: (8) 1/4" Wood Screws Note: Screws are not included. How to Measure OffsetMeasuring Offsets: The offset of a surfacemount latch is the distance between the surface on which you mount the strike (the jamb) and the surface on which you mount the latch (the door). Figures 1 & 2 Straight or Offset Handle: Figure 3 illustrates a straight handle edge mount latch. Figure 4 illustrates an offset handle, which is bent away from the latch body to allow more room for grasping the handle. Edgemount Latch: Mounts to the edge of the door. Edgemount latches are most commonly found on lightweight reach-in doors, under counter, and back bar units. Surfacemount Latch: Mounts on the face of the door. All walk-in doors use surfacemount hardware. Safety Latch: A walk-in latch that uses a push-rod to prevent accidental entrapment – even if the latch has been locked from the outside. In many states, including California, safety latches are required by law on all walk-in units.