Casement Window Operator (Crank Handle Mechanism) -

Question

White housing with foldable gray crank handle, used to open and close casement windows. Marked “MADE IN U.S.A.” with code 04.12.05 001:19.
Linkage Arms – steel arms attached to operator. Stamped with numbers:

41010B
31884
41016

Mounting Plate – Multiple screw holes for securing to window frame. Marked with casting code 50.12.10

Emily · Accepted Answer

Hi there!

Thank you for reaching out to us. This resembles the 39-239B. The 39-239C is the stainless steel version. Review the specifications and see how they compare with your old assembly.

Please note that the 39-451 is sold separately.

Dimensions for 39-239B

Alternate view and dimensions for 39-239B