At times, you may experience an issue with the lock on your CBU. Below is information on how to handle these situations.
Should you need to replace your lock, there are a few simple steps to do this. The lock is a common mail door lock.
Item USPS-L-1172C. You can purchase just the lock cylinder or the entire cylinder and latch assembly. The cylinder and latch assembly is referred to as a USPS-L-1172C Type F Tenant Door Lock. These can be purchased online, Amazon, or any local locksmith.
They are very simple to change out if you can access the inside of the door. The below link has a short video showing the steps to do so. https://youtu.be/qFo5hz8AatY
If the door is closed and you are unable to access the inside of the door you will need to contact your local post office to have a maintenance man for the Post Office meet you onsite. They can unlock the main door so you can access the back of your lock.
Trouble opening a parcel locker with the key?
The turn and release for the key you are given for the Parcel Locker is controlled by the Post Office’s Arrow lock. It’s not uncommon for the Post Office’s Arrow lock to get hung up, causing the key you are using to bind as you try to turn it. This can only be fixed by the post office. You’ll want to contact your local post office for assistance. If the key is physically broken in the lock, you will need to contact us for help.
At times in winter your lock may become frozen and you may be unable to turn the keys. A standard lock deicer is recommended to free up the lock. This can be purchased from any local hardware store or automotive supply store.

There is also an option to add a small protective cover to help reduce water in the lock: http://www.postalproducts.com/product/s1000655.htm
We are more then happy to answer any questions regarding the functionality of your CBU, but any issues relating to mail delivery or missing packages should be directed to your local post office. We do not handle your mail or package delivery.
We are not responsible for lawn mowing, snow removal, clearing of overgrown brush or other upkeep around your CBU. Questions or concerns regarding maintenance around your CBU should be directed to your HOA leadership. If your development does not have an HOA, maintenance around the CBUs is the responsibility of the homeowners within your community. It is not uncommon for USPS to skip delivery if snow and brush is not removed from around the CBUs.
If you need additional service, we can be reached at Chris@ExpressSignsWI.com. Please make sure to include your subdivision name, city, full address and CBU door assignment in the email.



