Small window

Thanks for reaching out! Your window operator reminds me of either the 39-090 or 39-188 dyad cranks. To determine which of these is the correct replacement, you'll need to compare their dimensions and design. Their compatible hardware and accessories can be found in the related products, below the product description.

You'll need to compare the shape of the gear arm, connected to the base of the operator, to confirm which one you have. The 39-090 has more of a zigzag shape; the 39-188 has more of a 'w' shape.

Are you also looking to replace the sash lock and the casement window hinge?

Dimensions for 39-090

Alternate measurement of arm