Pro-Lok Entry Armor EPL-106-W Patio Door Lock- Keyed Lg Rectangle (White Finish)

This is a very good option for exterior patio door locking or any other door or window that needs additional locking mechanism. You can mount it on multiple sides / front or back of your door. Very sturdy locking mechanism as well as high quality steel. Very easy to install. Installed on a 1997 home exterior patio door.

Relatively easy to install - the instructions are clear but depending on your door type, it may be a bit difficult to fit a drill into the frame to drill the deadbolt hole. Once installed it is very solid and the door cannot be moved or lifted. It works better than a dowel rod in the door frame or the flimsy foot locks. The bolt and lock are solid metal and operate smoothly. Once installed, it blends in with the door. My only complaint is the plastic pieces that cover the holes are off-white and do not match but it's a minor cosmetic issue. Overall this is a nice, simple lock that should last for years.

Very simple to install and use, keeps granddaughter in house

Exactly what I was looking for. It's a solid lock and the bolt it tight. It won't drop down on you. The keyed lock is a bonus and useful as a child safety lock if needed. My door lock never worked, holes were drilled wrong from the install. I had a stick in the door for many years. I had to modify my door some at the top to fit it, but no fault of the lock. I can finally ditch the old stick, nice feeling not to have to bend over for the darn thing anymore.

I wasn't sure this lock would fit our needs, because I couldn't find anything definitive regarding whether or not it would work on a patio door that opened on the outside of a stationary glass panel, but I can now confirm that it works perfectly! We use it so the door will lock even though we have a dog door installed. One note on installation, you MUST leave about 1/2 an inch of space above the lock. That wasn't noted in the instructions and I didn't think about it until it was installed and I tried to open the door (our previous lock did not require any space). I could pull the bolt all the way out, but why be lazy now and pay the price forever? We had an existing pin (aka very tiny bolt) that attached in the same upper location, so we also had a little trouble drilling the 1/2" hole for the bolt, but other than those two mishaps everything was very easy. Two 1/8" holes for the lock, one 1/2" hole for the bolt and voila! This is a large and sturdy lock (it really did need a 1/2" drill bit for the bolt hole). A few notes: The bolt has to be all the way in for the key to work. The Pro-Lok does not have to be locked with the key for the bolt to stay in the secure position; the bolt is very snug in it's track, meaning it won't fall open if someone shakes the door. We probably won't lock it except when we go on vacation, since someone would more easily break the glass than get through the Pro-Lok. I hope this helps someone else decide on this item. I would recommend it to anyone.