Mortised the door to accept them, and they look great. Obvious door modification is required if no existing mortise pockets, but once installed, the door feels strong, the bolts are long enough to not need to raise the threshold, it looks clean and it feels very secure.

Respectfully,
Nathan Evans

Okay. I love that it's flush, however some have said theirs came with instructions and mine didn't. I had to chisel it out. I first tried with a jigsaw which was an absolute terrible idea, which can see that top two inches looks terrible. Decided to go in with a chisel for the rest and that worked well. As far as mechanical review, it is a great product. But unless you have experience with a chisel then maybe try something else. My door is solid wood which was very helpful.

I bought these for a custom-made security door. They worked however, they are not really heavy duty. They did the job though.

My old double-door had the type of locks that slide up/down to move the bolt into the hole. The one at the top of the door would sometimes start to slide down thanks to gravity, whenever the main door would open/close and vibrate. I found myself constantly checking it to make sure it stayed locked.

I bought these since they had the same apparent dimensions as the old ones and figured it'd be a pretty quick replacement. Of course, upon removing the old locks, I realized they didn't route out the entire area in the side of the door. The old ones, in other words, were kind of cheap and not solid blocks.

So I had to spend a little time chiseling out the pocket to install these. These are wonderful updates, but just be prepared to do a little work if you're updating an older door. A sharp set of chisels and maybe a multi-max tool for speeding things along. I also had to slightly widen the existing holes in the top/bottom of the door frame since the alignment of the bolt wasn't quite the same, but at least that was easier to accomplish.

In the end, I know have these great lever bolts and I don't have to worry about them working themselves open on their own, and more secure since you can't bypass them with a wire or something from the outside. You can only open/close them when the main door is open. They're also so much more solid feeling than the old set. The bolt seems higher quality, and having a full, solid body embedded in the door makes me think it'd hold up better if someone tried to kick it in.

One of the flush bolts we received the sheet metal was not bent correctly, but a pair of pliers fixed that issue before we installed them. The functionality is solid and have not had any difficulty operating the flush bolt. Very happy with my purchase.