Top 8 Large Mailboxes for Outside – Post-Mount Mailboxes

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Post Mount Mailbox Extra Large Postal Storage Box Gray Galvanized Steel Heavy, Large Mailbox., mailboxes for Outside

COLIBYOU #ad - The powder-coated finish helps prevent discoloration from outdoor elements. Extra-large size offers abundant space for high volumes of mail and large packages. Engineered from quality galvanized steel for rust-resistance.
ManufacturerNo #ad
Height50 Centimeters
Length100 Centimeters
Weight100 Kilograms
Width100 Centimeters



Architectural Mailboxes 950020B-10 Centennial Postmount Mailbox, XL, Black

ARCHITECTURAL MAILBOXES #ad - Sleek magnetic door closure provides reliability all while keeping door firmly closed. And still has room for additional mail and parcels. X 14 in. Mailbox measures 18 in. X 5. 5 in. X 12 in. Predrilled 4 in. Hole pattern in floor allows for mounting to existing post installation hardware not included. X 10 in. Heavy gauge galvanized steel body equipped with stainless steel door pins then fully powder coated for corrosion resistance. Larger inner compartment can accept a usps priority mail large flat rate box 12 in. X 12 in.
ManufacturerArchitectural Mailboxes #ad
Height11.93 Inches
Length18.35 Inches
Weight14.08 Pounds
Width14.17 Inches
Part Number950020B-10
Warranty1 Year Limited Lifetime Warranty

3. Gibraltar Mailboxes


Black, Gibraltar Mailboxes GHC40B01 Grand Haven Decorative Package Mailbox

Gibraltar Mailboxes #ad - Post sleeve installs over 4×4 wooden post sold separately. Some assembly is required. Heavy-duty, rust-proof plastic construction ensures maximum durability. Magnetic door latch keeps mailbox closed. Impressive craftsman design and textured finish adds distinction. Space provided for address letters or numbers. Extra-large size provides abundant space for packages.
BrandGibraltar Mailboxes #ad
ManufacturerSolar Group, inc. #ad
Height54.12 Inches
Length20.1 Inches
Weight17.25 Pounds
Width16.63 Inches
Part NumberGHC40B01
Warranty90 day limited warranty

4. Home & Comforts


Stanley Extra-Large Galvanized Steel Post-Mount Mailbox, Black, Large Mailbox, mailboxes for Outside., Mailbox with Mail

Home & Comforts #ad - H x 24. 8 in. W x 15 in. Extra-large capacity unit offers enormous space for medium to large size boxes and other various types of mail. The expansive body measures 11. 7 in. D. Mounting bracket and hardware sold separately. Approved by the United States postal service postmaster general. Includes an adjustable steel door latch to provide a secure fit. Engineered with top quality galvanized steel and an aluminum outgoing mail flag. Mailbox features a durable ribbed body and powder coat paint finish that adds strength and resistance against weathering.
BrandHome & Comforts #ad
ManufacturerDoes Not Apply #ad
Height15 Inches
Length24.8 Inches
Width11.7 Inches



Black, Large, Architectural Mailboxes 8950B-10 Chadwick Postmount Mailbox

ARCHITECTURAL MAILBOXES #ad - X 6. 61 in. Fully powder coated inside and out. Mailbox measures 21 in. X 8. 8 in. Cast aluminum handle. Steel reinforced opening resists abuse. Durable galvanized steel for longevity.
ManufacturerArchitectural Mailboxes #ad
Height8.94 Inches
Length21.06 Inches
Weight4.62 Pounds
Width6.61 Inches
Part Number8950B-10
Warranty1 Year Limited Lifetime Warranty

6. Gibraltar Mailboxes


AR15B000, Gibraltar Mailboxes Arlington Large Capacity Galvanized Steel Textured Black, Post-Mount Mailbox

Gibraltar Mailboxes #ad - Large capacity accommodates small to medium size packages. Pre-drilled holes on side and bottom for mounting. Roller catch door latch keeps door securely in place. Some assembly is required. Mounting board and hardware sold separately. Match with any Gibraltar Mailboxes post with the letter code B. Constructed from galvanized steel with heavy-duty molded plastic door for added durability. Space provided on front door for address numbers. Powder-coated paint protects mailbox from rust and other elements.
BrandGibraltar Mailboxes #ad
ManufacturerSolar Group #ad
Height11 Inches
Length23 Inches
Weight9 Pounds
Width9.5 Inches
Part NumberAR15B0EC
Warranty90 Day Limited Warranty



Large, Architectural Mailboxes 7900B-10 MB2 Postmount Mailbox, Black

ARCHITECTURAL MAILBOXES #ad - X 11 in. Classically shaped in a refreshed design with embossed door and side panels provide a place for house numbers to be applied. Mailbox measures 206 in. Predrilled 4 in. X 10 in. Front access door opens wide to allow for easy mail removal. Mounting holes in floor allows for easy installation. Reinforced door bracket for added rigidity. X 8. 8 in.
ManufacturerArchitectural Mailboxes #ad
Height10.63 Inches
Length20.47 Inches
Width8.58 Inches
Part Number7900B-10
Warranty1 Year Limited Lifetime Warranty



Architectural Mailboxes 6200B-10 Oasis Classic Locking Post Mount Parcel Mailbox with High Security Reinforced Lock,Black,18.00 x 15.00 x 11.50 inches

ARCHITECTURAL MAILBOXES #ad - Suitable for installation into a pilaster or column - the entire outer shroud is one piece to resist moisture and the elements. Doors include rubber seals to keep deliveries clean and dry - all hardware made from stainless steel and other corrosion resistant materials.

Body constructed of heavy 16 and 18 gauge galvanized steel fully powder coated prior to assembly for durability and long life. 18-inch d x 14-inch h x 11. 5-inch w, 23-pound - use adapter Plate 7530-10 for 4x4 wood post installation. Postmaster general approved and patented design allows delivery of mail bundles and small parcels - perfect for Internet and catalog shoppers.
ManufacturerArchitectural Mailboxes #ad
Height14 Inches
Length18 Inches
Weight5.91 Pounds
Width11.5 Inches
Part Number6200B-10
Warranty1 year manufacturer limited warranty