Check the listing for details. Andersen Split Arm Hinge Andersen 400 Series Casement Windows Lower Sill Hinge. Color: Silver, Condition: New. Listed at 18.17 USD. Andersen left-handed split arm sill (lower) hinge with screws and egress control plate for Andersen 400 Series casement windows manufactured 1966 - present. If the window was manufactured prior to 1981, you must replace both the upper and lower hinges. Fits CW35-CW6 and CX35 with a 20 inch opening. Handing: Left handed; when viewing window from outside the home, the hinge will be located on the left side. Window Opening Size: 20" Track length: 11-7/8" NOTE: These parts require the Hinge Replacement/Conversion Instruction Guide from Andersen. View instruction guide or watch video here. Related Parts Head Hinges: 1361463 - Standard Left Head 1361462 - Standard Right Head 1361467- Corrosion Resistant Left Head 1361466 - Corrosion Resistant Right Head Sill Hinges: 1361469 - Left Sill, Standard 1361468 - Right Sill, Standard 1361471 - Left Sill, Corrosion Resistant 1361470 - Right Sill, Corrosion Resistant