Sumnacon 2Pcs 6 Inch Door Bolts - Stainless Steel Concealed Security French Door Locks with Hardwares, Metal Flush Latch Bolts for Composite Wood Double Dummy Door, Black

The bolts themselves were good quality, it just took a lot of effort to get them to fit in the spot needed (door's fault, not the product). I measured what I needed and this was the closest to the fit that I could find. If anyone is planning on replacing your flush bolts, get the closest size to fit you can find and plan on a lot of grinding to make it fit. In the end, they work well and look good. Even with the extra work, it was still better than spending hundreds of $$$ on replacing the Astragal.

I have 2 pairs of 10-14 year old French doors on the back of the home I just purchased. The cheap friction based plastic slides had cracked/failed and otherwise looked like they were on their last leg from years of brutal Florida sun and the pins were rusting from the salt air. These stainless steel assemblies effectively were direct replacements although they install differently then the originals. The originals that were still intact required the dooe be removed to get them to slide out, otherwise they stopped at the floor. These go in from the side and can be installed with the door in situ. The units were ever so slightly thicker and were sitting a little proud of the door frame. A little sanding/tweaking was needed on the tighter door set. The other set fit just fine. I needed to drill larger pin holes as these are a bigger diameter. Once installed, they look great, work even better and was so glad they were dimensionally near perfect in most respects. 2 mm less deep and I wouldn't have had one issue. Highly recommend.

My use case: Front double door, normally closed half, top & bottom. Prior device was notched into door, very flimsy, expected to be one finger pushed up/down. This control, flip out and across, is much less prone to getting stuck in place. The thickness of the metal parts is about the same. Not too flimsy, not Swiss strong. 5 for ease of installation, decent price, looks nice. Shorter by 30% of the device that was there before, used wood filler to backfill the gap. The prior one was probalby not cheap and this was a screw in replacement. Screws were shorter by half with this vs old (easier screw-in, probably not as strong).

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.

Used these to replace some slide up locks that kept sliding down. Problem fixed, install was easy and they work great

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.

Once installed, these function very well, look good, and are really sturdy. Obviously cutting the mortise in your door takes a steady hand and a tool appropriate for the job. I cut into pocket doors without dismounting them, which makes the operation a little more difficult. If I recall, these ended up kind of pressure fitting into the mortise and then secured with a couple screws. The floor plate is also best recessed and looks really good when fit well.

I bought this to keep one of my double doors in place. It did do the job, but 1 of them came off track when I was trying to latch into the frame. The other one worked exactly as expected, after I found the proper placements using the first one. I’m using it for an interior door. Not quite sure if I would use it for an exterior door. Feels pretty sturdy for my interior door.