Product is very cheaply made. Not worth the money. After a couple times of opening and closing the mailboxes, one mailbox door literally fell out. Hinge pin broke. And it literally had only been used about three times when this happened.Would not buy again.A word of caution: not only is this product for replacement only, but it has to be installed in the exact location as the existing mailbox. Our condo mailboxes are in our outdoor entrance, and pretty much destroyed by vandalism, so we bought these, which are the same as our existing ones, and installed it inside our lobby area. When USPS came out to install their locks, they wouldn't do it because we changed the location, so we had to send them back. Big hassle!!Installation of the mater lock has to be done by the postal service. Which means you can’t use until the postal service installed its component.I purchased this mailbox for my 6 plex apartment building. From day one the hinge points at the bottom corners have had difficulty staying in place, making it difficult for the postal carrier to secularly close the entire box after delivering mail. It seemed to be hit and miss for the carrier as they have put up with it the past few months since we installed it. Until this week, the postal carrier posted a note on the mailboxes, saying that they can no longer deliver mail to these mail boxes as they are unable to securely close the unit, and all mail is being held at the post office. This unit looks great but there is something either wrong with the design of the pins in the lower corners that act like hinges or with the locking mechanism at the top, because the postal carrier got increasingly frustrated with being unable to close it properly. I should have requested a return right away, now I am stuck with a $240 expense that I have to eat and now get another box. Pretty disappointing.Just as described, great price and works well. Gives a nice clean look to my building and all the keys/locks work great. I just called the local post office and arranged to have their installer come out and put in the USPS lock after I had mounted it and we were off and running.Poor quality and packaging.Ease of installationArrived damaged but used anyway; there was no reaction to complaint of damage. The keys are very malleable; one arrive damaged and another became bent due to the frame of the being bent making two boxes difficult to open, hence the bent key result. Delivery packaging needs to be more protective and keys need to be stronger.