USPS Approved. Secure your incoming mail with the state-of-the-art MB2000, designed for homeowners who require a mailbox with increased security, expanded storage capabilities and durable construction. Can be mounted on a post for curbside installation or recessed mounted into a column or pilaster for wall installations. Features: RUST-FREE all-aluminum construction, angled outgoing mail slot prevents theft, incoming Mail/Parcel slot 10"w x 1 1/2"h, easy access to mail with secure 5-pin cylinder lock with 2 keys, large storage capacity can handle several days' mail. Mailman pulls down door lever to expose the 1 1/2"h incoming mail slot, and the outgoing mail shelf. Includes red flag. Dimensions: 11"w x 15"h x 20"d. Please allow 5-10 business days to be shipped. Finishes: Available in US28 clear anodized aluminum ($179.00) or powdercoat black ($209.00) Optional Surface Mount Post - designed for installation over existing concrete. This 3 3/8" x 3 3/8" x 36" high aluminum stand has a surface mounting base plate 8"w x 6"h. Mailbox post is installed over existing concrete by red-heading (4) concrete bolts into (4) predrilled holes on bottom of mouting base plate. Mounting hardware not included. Optional In-Ground Post - designed for under ground installation. This 3 3/8" x 3 3/8" x 60" high aluminum in-ground post is designed for installations into existing dirt/grass ground. Installation of post will require digging dirt/grass, planting the in-ground post 24" into the ground and then pouring a cement footing to secure the post in place. USPS standards for mailbox placement: 42-48" from road surface to point of mail entry 6-8" from front face of curb to mailbox door *Note: There have been new changes to embossed stamp "U.S.Mail". It is now located on the bottom door, not the top door as shown in the picture.