Locking Mailbox Insert

As one of the most durable locking mailbox inserts on the market today, Home Security Product's locking mailbox insert is sure to give you peace of mind while keeping your mail secure.Locking Mailbox Insert

Our locking mailbox insert is made from heavy 16 gauge steel with a stainless steel hinge making it virtually impenetrable and resistant to vandalism.

The front incoming slot is large enough for standard and oversize mail, small packages, bills, magazines, etc., and still leaves room on top of the insert for overflow magazines and non-valuable mail.

Our secure locking mailbox insert is powder coated for protection, and is available in standard black color. You can purchase the locking mailbox insert alone or with a new mailbox. You will receive two keys with your mailbox insert.

Our insert will fit most standard medium size mailboxes. If you aren't purchasing a new mailbox with your insert, please measure your mailbox first to insure a proper fit. Make sure that the flag mount on the inside (if you have one) will not interfere with the insert when you put it in. Most mailboxes have an external flag mount. Our locking mailbox insert comes with hardware, template, and instructions for easy mounting. Installation only takes minutes.

As with all new mailbox installations or applications, make sure that your mailbox/mailbox post is mounted at the correct height and distance from the street as per your postal regulations. Check with your local carrier or postmaster to determine if the lockable insert is acceptable to him/her or the area.

The mail carrier doesn't need a key.  Only you hold the key.

Home Security’s locking mailbox insert comes with a heavy duty lock, template, instructions, 2 keys and 2 screws for installation. Our insert is guaranteed to last and is built with the highest quality.

Already Have a New Mailbox?

That's ok if you already have a new mailbox. You can purchase our insert alone to use with your other mailbox. Our locking insert fits most standard sizes mailboxes.

  • Measurements:
    Mailbox - 8 1/4”W x 9 5/8”H x 20 5/8”D
    Insert - 7 5/8”W x 6”H x 20 1/2”D

Medium Locking Mailbox Insert Pictures

Click pictures for larger view.

*Note: locking insert does not come with mailbox unless you order that option by using the links below.

Medium Insert 1  Medium Insert 2

Medium Insert 3  Medium Insert 4



Mailbox - 8 1/4”W x 9 5/8”H x 20 5/8”D

Insert - 7 5/8”W x 6”H x 20 1/2”D


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