Casey from SWISCO responded:
June 2, 2021
Hello, It looks like you have an old and discontinued Arcadia 800 Series patio door. This hardware isn't made anymore, but I believe that you can use our 82-218 mortise lock with either our 82-020 or 82-033 handle set. Unfortunately, you will need to drill new holes for either of these two handle sets with 3-15/16" hole spacing since we do not offer anything with 5-1/2" spacing. Take a look and see what you think. |