Sliding Patio Door Handel

Thanks for posting. The 82-009A and 82-082 both are clamp style locks, so if the dimensions align I think either could work for your door. The 82-306 outside key lock should also work with both handle sets, although I am afraid it does not come in a white finish. Let me know if you have further questions. 

I think the 82-082 should be able to accept the old lock, though it depends on your door's exact configuration so I can't say for certain. If you attempt to use it, let me know how you make out and we'll go from there.