Interlock - World Pat 12C 1S23

Question

Windows are Certainteed Brand. Im looking for replacement operator hardware for a 1 each Left and 1 each Right Casement Window.  Found the old hardware marking of  Interlock - World Pat 12C 1S23

Bob · Accepted Answer

Thanks for posting. These looks like older versions of the the 39-091 and 39-092 ROTO Operators. Note that the bracket arm that connects these operator's short arms to the window sash are no longer made. You'll need to reuse your old bracket arms if possible. For a new handle, see the 39-224 sold separately.