I have a superseal manufacturing company series 800/850 sliding patio door, SPM-M-010, NFRC 004197 Vinyl sliding glass door double glazed clear - the handle set on both sides have broken, this was a locking handle set.
I am unable to locate anything that will match up to the holes in the door. The plate size was 8", the outer holes are 4" on center and the inner holes (lock latch part of bottom hole) 1.5" on center.
I hope you are able to help me, I don't have photos, I've had to use cabinet pulls to open the door since the handle part snapped off the plate. Thank you