TechnologyLKSliding Glass Patio Door Lock Mortise Type 45 Degree Keyway 3-11/16" Screw Holes

I replaced a sliding glass door lock that was no longer working properly, as an internal spring had broken. This was relatively easy to install, removing two screws to remove the handles, removing two screws on the door lock, installing the new lock, lining up the keyway and re-installing the handles. In order to get the proper lock, you need to know the thickness of the lock, the angle of the keyway and the distance between the two screws.

Just what we needed to fix my grand mothers sliding door.

After carefully examining the photos and dimensions, I determined this had the correct features to replace the broken mortise latch on our patio door. There are videos on-line explaining the many subtle variations in these locks and after viewing them it wasn't hard to determine that this lock had the correct dimensions, lever orientation, screw type, and cutout shape. It didn't take long to install, but it did take some fiddling to make it latch correctly and easily. Good purchase and learning experience, as these mortise locks don't seem to last more than a few years on high traffic patio doors.

Perfect fit for my Pella door. Watch the installation video. Easy to do!

This part was an exact match for a patio sliding door installed by the builder in 20212 (builder grade). Taking the old one out was a little challenging but after watching a few YouTube videos I made sure to hold the latch with needle nose pliers so it wouldn't fall back into the door jamb. The new one went in a lot easier. Total time about 15-20 minutes and saved me a ton of money.