61-073 622 (400) B60 Thick Door Kit 2.25 to 4 in

I built a soundproof room and door for my home theater and the door is 5" thick. I could not find a way to get the door to pull securely closed to seal because all of the doorknobs and deadbolts are not made for a door of that thickness. I wanted a digital deadbolt to keep the little ones out, but easy access for the adults. I saw this and bought this product along with the deadbolt just to see if I could combine the two and make it work. I was able to weld the two shafts from the kit and the deadbolt into one that would work in the deadbolt, but also be long enough to cover the door's thickness. Fortunately the screws were long enough as they are made to trim down to fit. The door lock works perfect. Now the room is secure and because the deadbolt allows the door to fully seal the soundproofing works so much better. I am positive this will work with other locks than it states if you are willing and able to make modifications to the pieces.

I didn't use this on a thick door, but I repurposed the tail piece for my application. I had a double cylinder dead bolt and wanted to use Simplisafe's smart door lock. Well that is only compatible with single cylinder dead bolts. The problem being was my tail piece was way too short coming from the double cylinder. I didn't want to re-key my deadbolts so I swapped the smaller tail piece with this longer one. I did have to dremel cut it down to the correct size needed, but it's functioning perfect on my door. $13 was well worth it for an easy swap.

Don't be fooled by the notches, you can't just snap these things off at the spots with wire cutters, you'll need a saw at least for the bolts. Otherwise it does what its supposed to.

finally this worked on our turn of the century door

This did the job on my extra thick shed doors. The bolts come with reliefs in them or steps if you will, allowing you to customize the depth. I was able to leave them without modifying or cutting them down. My door around 3.75” thick. The longer lever is easy to install on the deadbolt. Very happy with the outcome.

The biggest issue with this extender kit is that the end of the "turning pin" is a different shape to the end of the original and it does not fit into the original lock. In the picture, the original is at the top and the replacement is at the bottom. To fix this you need to cut off the end off and then measure the length needed so that the cut off end fits into the groove inside the door lock. The pin and screws are designed to be cut to size to fit the width of the door but even with these cutting guidelines and with the extra cutting to remove the end of the turning pin, the pin was too long so it had to be measured and then cut further to fit. The replacement pin is not compatible and Schlage should just offer various extender kits to fit various door widths to avoid the need to cut to size.

We bought a standard door sized electronic digital lock that didn't fit our door. Ordered this kit and it solved our problem. I would recommend not getting an oversized door to start with (haha), but if you do have one, this product will help!

We have a thick door and bought this kit along with a replacement Schlage lock, thinking it would make installation easier. These parts didn’t work at all. We had to cannibalise parts from our old lock to make it work. Complete waste of money.