Gibraltar Mailboxes

Model # MB515B01

Internet # 202881321

Store SKU # 346563

Rubbermaid Plastic Post-Mount Mailbox in Black

$29.97 /each
  • Durable construction ensures long life for this mailbox
  • Compatible with various post styles



Model # MB515B01

Internet # 202881321

Store SKU # 346563

The Rubbermaid Plastic Post Mount Mailbox is constructed from durable polymer plastic and features an attractive black color. The mailbox is weather and impact resistant for longevity against the weather elements and day-to-day use. The mailbox is a large size unit with plenty of room for high volume mail deliveries and the door opening allows for delivery of various mail types. The body of the mailbox features a ribbed design on top and textured side panels for a unique and stylish appearance. Includes a plastic mail indicator flag. This mailbox is proudly made in the United States.

  • Constructed from durable polymer plastic
  • Weather and impact resistant for longevity
  • Mailbox is a large size unit with plenty of room for various mail types and average size mail deliveries
  • Mailbox features a ribbed top and textured side panels
  • Includes a mail indicator flag
  • Approved by the United States postal service postmaster general
  • Compatible with mailbox post models: DPK00000

Info & Guides

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Assembled Depth (in.) 
21 in 
Assembled Height (in.) 
9.5 in 
Assembled Width (in.) 
11.75 in 
Assembly Required 
Color Family 
Hardware Finish Family 
Letters/numbers included 
Mailbox Size 
Newspaper receptacle 
Outgoing mail indicator 
Rear access 
Single Box Type 
Post Mount 
Warranty / Certifications
Manufacturer Warranty 
90 Day Limited Warranty 
U.S. Postmaster General approved 


Lockable: No
Hardware Finish Family: Black
Material: Plastic
Brand: Gibraltar Mailboxes
Price: $20 - $30
Review Rating: 4 & Up


Rated 4.8 out of 5 by 43 reviewers.
Rated 5.0 out of 5.0 by THE Mailbox for home business! I had one of these at my former home and it lasted some 20 years without a problem. It is perfect if you receive magazines or anything in a large envelope as they will lay flat in the mailbox. The 'door opened' indicator is great for saving trips to the mailbox to see if the mail carrier has stopped. SO happy they still make this for my NEW home!!! February 11, 2014
Rated 5.0 out of 5.0 by Functional Purchase I bought this mailbox because it was similar to the mailbox that we used until recently. My brother put the mailbox up and although a cement base was later added around the mailbox for stability, the product turned out to be very functional. Since I receive a lot of packages (sometimes delivered by USPS), the mailbox I would choose would have to be wide enough for some packages. This mailbox fit that need very well and has room left for our regular mail. Overall, this mailbox is both functional and serves our needs quite well. September 23, 2015
Rated 5.0 out of 5.0 by GREAT SIZE Has only been in use for two weeks. Waiting to see how it holds up to the snow plows. Well built and a very practical size. Inside opening measures 10 inches wide X 6 inch high side walls X 7 1/4 inch high at top of arch. January 27, 2016
Rated 5.0 out of 5.0 by Best mailbox we've ever had. We've had this mailbox at our last three homes and will certainly buy it again if we ever need another one. It's a good bit wider than a conventional mailbox so magazines etc. lay flat when put inside. The additional space also allows the mailman to put boxes and it instead of putting them on the front porch or leaving a slip to pick it up later. Combining that with this great price and the fact that it holds up very well to all weather conditions makes a great combination. April 14, 2015
Rated 5.0 out of 5.0 by Best available! Recommend highly! I have purchased three of these over the years. Three years ago, I sold the house where I installed the first one. One of the first things I did was purchase and install one at my new home. Hurricanes couldn't blow it down, falling trees couldn't crush it. It took a trash truck running over it to take it out of commission (I now use it outside my back door to stage things which need to go to my workshop. The week after installing the new one at the end of my driveway, the same trash truck claimed a return match, but couldn't get the job done. The Roughneck prevailed. If ever Godzilla comes through and stomps it, I will buy my fourth. You can't do better than this. November 13, 2012
Rated 5.0 out of 5.0 by DURABLE AND BEST MAILBOX EVER Purchased this to replace a hit and run mailbox... all I can say is that it is durable Installed it mid November and December 25th it was hit again... NO damage at all just loosened the 4x4 post and had to reattach the mailbox lid.... works just fine I did move the mailbox back 1.5 feet to make sure that it is not as close to the street again.. MOST DEF BUY THIS!!!! December 29, 2013
Rated 5.0 out of 5.0 by Best $30 Mailbox Available Just installed the 2nd one, after a vehicle took out the 1st one. Had the 1st one for about 15 years with never a problem. Door still worked like new, even the flags were still functional. Didn't hesitate for a moment when I found the same model still available. The only issue you'll have with this mailbox, it will fade if installed in direct full sun. But you can return it to its original shade with a vinyl treatment, like you would use on the black plastic on your car. Installs easily - directly on a standard 4x4 - no special bracket needed. Note: Mounting screws are not included. December 21, 2013
Rated 5.0 out of 5.0 by Great Mailbox! I've had two of these mailboxes; one at my residence and one at my business. They've both been up since 1995! The one at the store is still in great shape; unfortunately, the one at home a truck took down along with the post set in concrete!!! But, I have gone to Home Depot to replace it! It is large enough for packages so the mailman can stay in his truck and I don't have things left on my front porch. It's the best mailbox I've ever had. Oh, and the 'you have mail' yellow flag is great!!! I don't have to go to the mailbox to see if my mail came!!!! June 12, 2013
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