FREE SHIPPING ON ORDERS OVER $99 (Contiguous US Only) $5 Flat Rate Shipping Every Time*
Oasis Locking Post Mount Black Extra Large Mailbox, 5100B Architectural Mailboxes
by Architectural Mailboxes      AMB5100B      Sold: Each     Availability: In Stock
List Price $255.48
Buy 1+ for $196.52 each
You save 24%
Ships by
Friday, Jan 25th
if ordered by
2pm Tomorrow (EST)
Per manufacturer return policy, all Architectural Mailbox returns will be subject to a 25% restocking fee. Items must be in original packaging, unused and in sellable condition.

Reward points With this product, you earn 511 loyalty point(s).

Earn 2 ROK Reward points for every dollar spent     Learn more      
International Orders For orders outside of the Contiguous United States, Click Here
Our full-size Oasis™ Mailbox featuring contemporary styling, an incoming parcel door that can accept small to medium sized parcels, and a locking homeowner access door, is the solution for home parcel and large mail volume deliveries. 
  • Hopper door for convenient delivery of small parcels and mail bundles
  • Access door locks with stainless steel cam lock for increased security (includes 2 keys)
  • Constructed of heavy 16 and 14-Gauge galvanized steel for durability and longevity
  • Rubber seals are included on doors to help keep deliveries clean and dry
  • Outgoing mail clip installed discretely inside hopper door
  • Galvanized steel body has been fully powder coated prior to assembly for added corrosion resistance
  • Entire outer shroud is made of 1-piece to resist moisture
  • Approved by the US postmaster general
  • Order Architectural Mailboxes adapter plate 7540B for 4 x 4 wood post installation
  • Item weight is 36.5 lb.


  • Outgoing Mail Indicator
  • Flag: n/a
  • Back/Body Panel: 16 gauge (1.5 mm) steel sheet
  • Front/Door Panel: 14 gauge (2 mm) steel sheet
  • Slot Flap & Retrieval Door: n/a
  • Roof: n/a
  • Hardware Assembly: Stainless steel rivets and hinges and zinc plated assembly screws
  • Front frame and Door Accents: n/a
  • Body Side Panels and Bottom: n/a
  • Body Front Panels and Top: n/a
  • Finish: Assembled after components are fully powder coated to protect against joint and seam corrosion
  • Floor: n/a
  • Assembly Required: Yes
  • Access type: Front Only

Product Specifications

Sold : Each
Brand : Architectural Mailboxes
Finish : Black
Application : Posts
Size : Extra Large
Mount Type : Post Mount
Security : Locking


We love to help you

Questions about this product?

Contact us for advice or questions about our products. We are here to help.
want even better deals?
Sign-up for our monthly newsletter and receive
exclusive saving and tips!
We hate SPAM and promise to keep your email address safe.

Our Brands