Truth Operator 13-1/2"
Truth Single Arm Window Operator. This new style replaces the older traditional size shown in the diagrams.
To determine hand of operator, if your sash lock (window lock), is on the left, you would use a left hand operator. And if your sash lock is on the right, you would order the right hand operator.
We sometimes find 45251 cast on the housing, and 40051 and 40052 stamped on the arm
Left hand shown. The Wi11454 handle in matching color is included with the operator.