Window operators

Question

Hi, looking to replace these window operators. Inside marking: Pat. Canada 1986. UK Patent 2135397.
Thanks!

Emily · Accepted Answer

Thank you for reaching out to us. Have a look at the 39-187 and 39-188 operators. These resemble the hardware shown here. Review the specifications and see if they match up with your old assemblies.

Dimensions for 39-187

Alternate measurement of arm