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Left Hand 9-1/2" Truth New Style Ellipse Single Arm Casement Operator
- Regular price
- $29.95
- Regular price
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- Sale price
- $29.95
- Unit price
- per
This product has been discontinued. Limited to existing inventory.Replace with: 50.60.00.212Additional components required with this replacement: Cover/Handle: 55309 Stud/Snap-On Bracket: 551093 ... -
Right Hand 9-1/2" Truth Ellipse Single Arm Window Operator
- Regular price
- $29.95
- Regular price
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- Sale price
- $29.95
- Unit price
- per
Replace with #50.60.00.211.Additional components required with this replacement: Cover/Handle #55308 Stud/Snap-On Bracket #551094 A track is not required with the replacement operator. The bracke... -
Right Hand Truth® 11" Casement Operator, Face Mount
- Regular price
- $78.82
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- Sale price
- $78.82
- Unit price
- per
Truth® single arm face mount 11 inch casement operator.Mounting: Face Mount ScrewsMounting Screw Holes: 3-7/8 & 4-3/4Operator Arm: Powder coatedArm Length: 11 inch , from center of operator to ... -
Left Hand Truth 11" Single Arm Casement Operator, Face Mount
- Regular price
- $78.82
- Regular price
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- Sale price
- $78.82
- Unit price
- per
Truth® single arm face mount 11 inch casement operator.Mounting: Face Mount ScrewsMounting Screw Holes: 3-7/8 & 4-3/4Operator Arm: Powder coatedArm Length: 11 inch , from center of operator to ... -
Truth 9" Left Hand Casement Operator, Bronze – 23 Series
- Regular price
- $72.58
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- Sale price
- $72.58
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Truth® 23 Series Single Arm Casement Operator, Front Mount - Bronze Finish.Used by Jordan and others on vinyl replacement and new construction window.Material: Mixed MaterialsMounting: Front MountA... -
Left Hand 11" Single Arm Rear Mount Casement Operator, Truth®
- Regular price
- $75.00
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- Sale price
- $75.00
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- per
Truth® Left Hand 11 Inch Single Arm Rear Mount Casement Operator with Round Shoe in Black.Crank Handle is sold separately.Arm Length: 11 InchArm Width: 11/16 InchScrew Holes: 3-7/8 Inch & 4-3/4... -
Truth 15.56 Ellipse 7-1/2" Single Arm Casement Operator Left Hand
- Regular price
- $29.95
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- Sale price
- $29.95
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Truth® 15.56 Ellipse 7-1/2 single arm casement operator, nylon roller, Left -
Left Hand Truth 9-1/2" Single Arm Casement Window Operator, Offset Arm, White
- Regular price
- $39.95
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- Sale price
- $39.95
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Truth® traditional style sill mount single arm operators 9-1/2, Offset Arm - WhiteType: Single arm, Sill MountArm Length: 9-1/2 inchArm Type: Offset - UPButton: Round Nylon 9/16 inch diameterHandin... -
Eclipse Straight Arm Window Operator, 7-1/4" Gold, Fold Down Cover
- Regular price
- $43.55
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- Sale price
- $43.55
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Eclipse straight arm operator, with fold down plastic cover.7-1/4 inch arm length from center of operator to center of round nylon bottom measuring 9/16 diameter, 3/16 inch thick. -
Right Hand 11" Single Arm Casement Operator with Round Shoe
- Regular price
- $75.00
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- Sale price
- $75.00
- Unit price
- per
Truth® Right hand 11 inch single arm rear mount casement operator with round shoe.Crank handle is sold separately.Arm Length: 11 InchArm Width: 11/16 InchScrew Holes: 3-7/8 Inch & 4-3/4 InchRol... -
Truth® Front Mount Operator, 11" Arm Right Hand, Brushed Nickel
- Regular price
- $52.95
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- Sale price
- $52.95
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Truth® Single Arm Operator Front Mount application, Brushed/Satin Nickel Finish - Limited to existing inventory (if you can purchase it, we still have some!)Normally used in Commercial, Office Buil... -
Single Hook Awning Window Operator, 20-1/2" Arm, Longer F Plate
- Regular price
- $81.68
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- Sale price
- $81.68
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Wood awning window single pull lever operatorArm Width: 20-1/2 inchHousing from interior edge to wood stop is more than 2 inches (F-Plate =2-7/32 inches).Available in 2 colors: Medium Bronze or Whi...
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Single arm casement window operators are mechanical devices that enable easy and controlled opening and closing of casement windows with a single crank and arm mechanism. The arm attaches directly to the window sash, allowing users to open windows outward smoothly for ventilation or cleaning. Truth single arm casement operators, especially models like Ellipse, New Style, Offset, and other specialty types, are widely relied upon for their durability, ease of installation, and long-term performance.
Applications and Use Cases
These operators are commonly used on standard residential and light commercial casement windows, particularly where a single, strong arm provides the necessary support and leverage. Single arm designs are ideal for narrow, trapezoid, or offset windows, and are a preferred choice when a straightforward, reliable crank action is needed. For windows that see frequent use or require consistent weather sealing, AmesburyTruth's mechanisms are highly regarded for their tight fit and smooth action.
Compatibility and Brands
Our collection features authentic AmesburyTruth parts, known as the original manufacturer for many OEM window brands. These operators fit a wide range of window types and styles, including those from Andersen, Marvin, Pella, and other premium manufacturers that utilize single arm operator technology. Most models are available in both left- and right-hand configurations; always match the hand to your window's sash lock position for optimal fit.
- Available arm lengths: 7-1/2 inch, 9 inch, 9-1/2 inch, 11 inch
- Material options: corrosion-resistant finishes in white, bronze, gold, nickel, and custom colors
- Mounting types: face mount, rear mount, front mount
- Handing: left hand and right hand models
- Compatible with a range of window sash sizes, including specialty shapes and offsets
Replacement and Installation Tips
When replacing a single arm casement operator, always confirm the arm length, mounting style, and hand orientation. Remove the old operator by unscrewing it from the frame and sash; install the new unit with matching screws, ensuring the arm aligns with the sash bracket. For enhanced performance, lubricate the gears before final assembly. Many of our customers find it helpful to consult operator-specific diagrams or guides, such as those provided with this left-hand Ellipse model or this right-hand face mount operator.
Genuine AmesburyTruth Parts & Quality Assurance
As an authorized retailer, TruthParts guarantees that every operator in this collection is a genuine AmesburyTruth part. This ensures precise fit and lasting reliability for your window hardware replacement. Whether you need a standard 9-1/2-inch New Style arm, an offset configuration like this offset model, or specialty options such as this Ellipse 7-1/2 inch arm, you'll find trusted solutions for both professional and DIY window repairs.
Frequently Asked Questions
How do I determine the handing of my window operator?
Check the position of your window lock: if it's on the left as you look at the window from inside, use a left-hand operator. If it's on the right, choose right-hand.
Can these operators be used on older windows?
Many single arm casement operators, such as the Truth New Style and Ellipse types, are designed to replace older models and can update aging window hardware with minimal adjustments.
Are all mounting holes and arms the same across models?
Mounting styles and hole patterns can vary by arm length, style, and brand. Always compare your current operator to product specifications or consult our team for guidance on compatible parts.