I like it, but my Mail Carrier doesn’t. His hand got caught in it and I could see the frustration in his face. I have to pull the corner of the letters out so he first of all sees them, even though the flag is up; and second, so they don’t pull back into the compartment. (It’s like a trap door) 
It’s wall mounted and the flag doesn't go down all the way. It doesn’t  make a difference though because it still goes down enough. 
The thing I like about it is how much mail it can hold and it’s held securely behind the lock so we don’t have to hurry to get it when it’s delivered…Only a little tricky with outgoing mail. On the inside there is a sticker addressed to the Mail Carrier specifically that explains how to retrieve the outgoing mail, but the Mail Carrier didn’t read it and he didn’t spend the time to figure it out, so the mail wasn’t picked up that day, which was a bummer. I would choose a different one next time…