A home owner from USA says:
March 14, 2016
I'm looking to replace the lock below....... The letters DNS are stamped on it and it is from a Weathershield sliding glass exterior door from around 1996. Do you have such a part? If not, do you know where I can find one?
Donna from SWISCO responded:
March 16, 2016
Hello, Larry! Please see our 82-218 mortise lock. This looks pretty close.