Mortise latch lock for sliding glass patio door

Question

I ordered a replacement lock on Amazon but they are slightly too large and not rounded on the ends to fit the opening in the pictures. Old latch/lock fell in the door when I was removing it. Google lens says my door is a Swisco. Home built around 1993, so that's about the time the door was bought and installed. Does anyone know the exact lock/latch that will fit this. about 3 and 1/8th inch tall and 1/2 wide but smaller around the corners because it's rounded on both ends. Difficult to find part.Thanks!

Jasmine · Accepted Answer

Thanks for your post! The mortise lock you'll need for the door is the 82-218. You'll need to measure the distance between the installation holes to confirm if this is the correct fit. Take a look at the video tutorial tagged below this thread for instructions on how to remove and install it.

Profile view of 82-218

Opposite side view 82-218

The latch can be replaced with the 82-106 Sliding Door Turning Lever. It is available in white, black, and beige.

82-106 in the white color option

Alternate view of 82-106