Simplex - 710826D Kaba 7100 Series Metal Mechanical Pushbutton Auxiliary Lock with Thumbturn, 25mm Tubular Deadbolt, Flat Front Face Plate, 60mm Backset, Satin Chrome Finish

Took a gamble this would work on a regularly drilled steel clad regular home door. The door was already drilled for dead bolt and door knob. The template provided for the lock is needed to get the 3 additional holes you will have to drill. I placed the bolt portion in the exsisting hole top one like the reg dead bolt would go in. Pay attention as to whether your door is right or left the written lock instal directions will make clear. Take a paper hole punch and punch out the 2 small holes on either side of the larger bottom hole outlined on the paper template. Tape the template over the existing dead bolt hole in your door , the bottom holes of template over the existing door hole .from the other side of the door place to bolts from kit through the bolt slide, through the paper holes. Eyeball them to see they're level eyeball the template so the edge looks parallel to the door edge. This will require u to untape and retype till u get it like described. Center punch the templates top 3 holes. These will be the only holes u will need to drill on a normally drilled door. Follow all the other kit directions. I found I needed to do some reworking of the door jamb receiving hole but it wasn't bad. The lock will cover the large hole which was already in your door but barely and u could be off a tad. I used silicone sealer across the top and sides of the lock to be sure moisture didn't get in my door. The lock works well directions were good product is solid reprogramming took a couple tries till i got it. But boy am i happy with it. I immediately ordered another.

I was impressed with the quality of this lock for the price. For most people it may be difficult to install as you will need to drill additional holes through your door. At a minimum you will be drilling two 1/4" holes and 1/2 hole if you already have a larger existing hole from an existing knob or dead bolt. The included instructions seem very detailed.. So much so I did not bother reading through them. The required hardware is included and comes in various lengths depending on the thickness of the door you are installing this onto. My biggest complaint is the quality of the installation hardware sucks. The screws will strip easily as they are very soft metal.The combination is easily changed from the interior side of the door using nothing more than knowing the current combination and a screwdriver. The button presses feel solid and the bolt moves securely with the turn of the lever. With the popularity of the electronic keypad locks these days for the same amount of money or more, It is amazing that more people do not install this much more reliable product instead.

I'm replacing my side door and needed a combination lock for the new door. I was very surprised to see that many combination locks are either very flimsy or the combination is not secure. This lock is perfect for me. It looks nice, is very easy to use, and is a strong, secure lock.Glad I found it.

inside parts can bend or break fairly easy with commercial use

I have only to say that installation has to be precise. If you are not a handy person and don't have the proper tools you are better off paying for installation. So if you are new to DIY this is not the project to start with. That being said the lock is a landlord's dream! Changing a code is so much better than changing a lock set over and over again. Well worth the price!

The instructions are terrible and confusing, very tricky to install. If it’s not a brand new door it’s even worse… Little tiny springs a couple of the locks I ordered six of them two do not work at all. Have to return them. I’ve used many of these for years and multiple properties… The last batch is not the same quality.

This is an excellent device. I have purchased 4 units over the past few years. I install them on my rental units. When one tenant moves out its easy to change the code, no rekeying required. Excellent quality lock. Just a note to read the installation instructions in great detail. The holes that you will need to drill are slightly different for a right hand swinging door and a left hand swinging door. Make sure you measure the backset of the door, it will either be 2 3/8 or 2 3/4 the backsets (latches) do not have a dual function like most door knobs do these days. You will need to order the lock with the appropriate latch. The latch size is calculated by measuring from the edge of the door to the centre of the large deadbolt hole in the door. If you do not have a predrilled hole in your door then either size backseat size will work. I'm very happy and will order again.

Exactly what I needed