Andersen® 100 Series casement windows use an operator to open and close the window sash. The operator consists of a gear mechanism and operator arms that extend and retract to open and close the window.

To identify the replacement operator needed for your window, open your window sash and locate the Product Identification (ID) label in the upper right-hand corner of the window frame. See Locate Product Identification Label and Measure Andersen® 100 Series Windows  for help finding your label. You can also visit Identify Your Product Guided Help Pathway  to help identify your product.

Split Arm Operator (Dyad Arm)

Works with units with visible glass widths of 16" and 20".

Attaches to a stud bracket below the sash.

Comes in standard and corrosion-resistant.

Dual-Arm Operator

Operator type is based on single sash unit sizes over 26", and dual sash unit sizes over 50".

Attaches to the sash track below the sash.

Offered in standard and corrosion-resistant.

The type of operator used on your window is determined based on the unit size. To determine your unit size, see Determining the Size of Your Andersen® Window or Patio Door. The casement window widths listed for each operator type below refer to the first two (2) digits of the unit size callouts.

Replacement Parts

To order 100 series casement window hardware choose the link below:

Dual-Arm Operator 

Split Arm Operator 

Replacement operators are available as standard or corrosion-resistant. To order a replacement 100 Series casement window operator Contact Andersen® Windows and Doors.

Installation

To install your 100 Series casement window operator, see How to Install a 100 Series Casement Operator.

To arrange for a professional to install your replacement window operator, see Locating Andersen® Window and Patio Door Service Providers in your area.

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