Clamp style lock for door

Hello,

This looks a lot like our 82-009A. Check it out and see how our dimensions compare to your assembly. If you also want a keyed exterior pull, see the 82-306 that is available separately. Thanks for posting! 

I'm not entirely sure what you mean by the clamp being reversed but I can tell you that the entire handle set can be flipped to install on left or right-hand opening doors. I hope this helps!