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Question

looking for replacements for old Hurd window sill mounted operators. model 55101 and 55100, gold in color.4 3/8" arm and 3 1/2".

Bob · Accepted Answer

Thanks for posting. Start by looking at our 39-388 Wright Operator, which has dimensions close to what you report. See the diagram below for reference. The opposite-handed version of this mechanism is the 39-387. For a handle that works with this design, see the 39-114L sold separately. Let me know if you have further comments or questons.

Dimensions for 39-388