Left-Hand 4-3/4" Split Arm Casement Window Operator – New Style Sill Mounted

New Style Sill Mounted Straight Link 4-3/4" Split Arm Casement Window Operator, Left

This new style sill mounted straight link split arm casement window operator is designed for smooth and reliable operation of left-handed casement windows. Commonly used by Hurd and other window manufacturers, this operator is specifically engineered to fit windows requiring a 4-3/4" (120.7mm) split arm design. It is ideal for those replacing worn or damaged operators to restore proper window function.

The product is a direct replacement for old-style Wright and Truth Operators—specifically models 55100 with 07900 or 21550 markings on the link. Compared to older versions, some measurements on the new style are slightly different, but these changes do not impact the operator's performance or the way the window functions.

This listing is for one left-hand casement operator only and does not include a crank handle. If you require a handle, the compatible Crank Handle 55311 is sold separately. The matching right-hand version is available as part 55082.

Technical Information

• Style: Sill mounted, straight link, split arm
• Arm Length: 4-3/4" (120.7mm)
• Handing: Left
• Compatibility: Used by Hurd and others; replaces old-style Wright and Truth models 55100/07900/21550
• Operator Only: Crank handle not included; handle 55311 sold separately

Notes

• Some measurements differ slightly from older styles, but functionality and fit are maintained.
• This is the left-hand version; right-hand operator is part 55082.

Replaces / Replaced by

• Replaces Wright and Truth Operator 55100 with 07900 or 21550 stamped on link

This item is sold individually. Always verify measurements of your existing window hardware for proper fit before ordering. Please measure your current operator carefully to ensure the correct replacement.