Truth Entrygard Dual arm casement window operator - Left Hand. "A" dimension: 5 17/64". Link Offset: UP. E-guard finish. Link stamped 20810. Link Arm Length: 4-7/16". Handle and cover sold separately. Note: Detached clips can be reversed in the field. Truth operator: 15.10.00.202. Used by Marvin, Bilt Best, Windsor, Vetter, Pozzi and other manufacturers.
Operator Markings on Base: U.S. Pat 4,241,541 and CAN PAT 350,432.