Do I have the 82-400?

I need to replace two of my Patio Door hardware. The house was built in 1987 by Designer Homes who are no longer in business. When I look at the 82-400, The measurements seem to match up. Please look at my pictures and let me know if I am on the right track? As you will see in image 0373 it says The Atrium Lock

Thank you for your time.

Alan

Reference the pictures above, I believe the 82400 will work to replace my broken entry set.
One question though. As in the first and second pictures above, the width of the wood panel is 3 inches with the lock screws exactly centersd at 1 1/2 inches.
I believe they call this dimension "back set", which is not listed in your diagrams.

Can you confirm the 82400 will work for this depth or 'back set'?.

Thanks

Sorry for the slow reply.
My interest is in the lock itself. The inside face plate has small diffences in dimensions but the lock itslef and its plate look good.
Worst case, I can use my exsiting face plates.

Thank you for your help.