The Andersen® 400 Series casement window was manufactured from 1995 to 1998.

400 Series Casement Unit
This window has a vinyl in white, Sandtone or Terratone encases the entire sash and a visible vinyl sash weld exists in each corner of the sash. The window lock is concealed; only the handles are visible.
Had a concealed lock mechanism that was black.
Casement Part Identification

Concealed Single Lock Mechanism 

Split-Arm Operator*

Straight Arm Operator* 
* Exact replacement operator is no longer available. The current 400 Series operator can be used with the addition of an adapter plate
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