Need help in identifying parts

Thanks for posting. I believe you have our 39-031 and 39-032 Dual-Arm Operators. Just make sure the dimensions of the arms match what is shown below. Let me know if anything differs. For new covers and handles, see the 39-107 and 39-114L sold separately. If you need new window hinges also, see if the 10" 36-004-10 set matches what you have. Let me know if you have further questions.

Dimensions for 39-031