I have no clue!

Question

Bought a 50 year old house.  No markings whatsoever on the windows or screens.  Any suggestions of how to purchase replacement mechanisms? We have 8 crank windows with 8 broken/missing handles.

Jasmine · Accepted Answer

Thanks for writing in! Your casement operator reminds me of the 39-330 RH Inverted Split Arm ROTO Operator, the opposite handed version is the 39-329. To confirm that these are the correct fit for your repairs, carefully review and compare the dimensions below.

If you are looking to replace the brackets along with the operators, the one in the photos is the 39-554 Roto Sash Bracket, the opposite version is the 39-553.

The compatible handle is the 39-232 Roto Folding Crank Handle.

Alternate image for 39-330

Side profile view with measurements