Truth's Anderberg 201 Series Casement & Awning window hinge 
20" Tract has been discontinued - Limited to existing inventory

Stainless steel hinges for protection against corrosion
Standard duty with stop for awning and projected windows
Sliding brass shoe guide
Generally use with Dyad (two link design) operators
Non-handed, Fits Left or Right hand window
Sold Each, Contains 1 hinge

Specifications:
Overall track length: 20-1/8 inch 
Track Width: 11/16 inch
Stack Height: 1/2 inch 
Non-handed
Material: Stainless Steel 
Note:   yellow dichromate steel has been discontinued