Top 8 Extra Large Mailbox – Post-Mount Mailboxes

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

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

2. Gibraltar Mailboxes


Gibraltar Mailboxes BM16BSN1 Brunswick Rural Mailbox, Large, Black and Satin Nickel

Gibraltar Mailboxes #ad - Elegant brushed nickel accents add curb appeal to any home exterior. Formulated from heavy-duty galvanized steel for extra strength and longevity. Mounting hardware is not included. Black powder-coated finish aides in preventing rust. Large capacity accommodates boxes of various sizes along with routine mail deliveries. Match with any gibraltar Mailboxes post with the designation letter code B. Mailbox is fully assembled and ready to install. Magnetic latch keeps the door firmly in place.
BrandGibraltar Mailboxes #ad
ManufacturerSolar Group, Inc. #ad
Height10.8 Inches
Length23 Inches
Weight9 Pounds
Width8.9 Inches
Part NumberBM16BSN1

3. Gibraltar Mailboxes


Mocha, Gibraltar Mailboxes GHC40M01 Grand Haven Decorative Package Mailbox

Gibraltar Mailboxes #ad - Impressive craftsman design and textured finish adds distinction. Magnetic door latch keeps mailbox closed. Post sleeve installs over 4×4 wooden post sold separately. Heavy-duty, rust-proof plastic construction ensures maximum durability. Some assembly is required. 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
Weight21 Pounds
Width16.63 Inches
Part NumberGHC40M01
Warranty90 day limited

4. Gibraltar Mailboxes


GGC1B0000, All-In-One Mailbox & Post Combo Kit, Gibraltar Mailboxes Gentry Large Capacity Double-Walled Plastic Black

Gibraltar Mailboxes #ad - Made in the USA. Double-wall plastic construction is rust-proof and virtually indestructible. Ultra-violet inhibitor finish prevents color from fading in the sun. Box/post combo installs easily over the Gibraltar 4x4 Easy-Install Anchor Post Kit - APK00000 Large capacity fits larger boxes, padded envelopes, and magazines laid flat.
BrandGibraltar Mailboxes #ad
ManufacturerSolar Group #ad
Height49.6 Inches
Length22.4 Inches
Width11.9 Inches
Part NumberGGC1B0000
Warranty90 Day Limited Warranty

5. Mail Boss


White Locking Mailbox, Mail Boss 7507 Curbside Mail Manager Security

Mail Boss #ad - Includes concealed outgoing mail clip, 12-disc wafer lock, 3 keys and all necessary installation hardware. 14- and 16-gauge electro galvanized welded steel construction defends against vandalism. Patented anti-pry latch locking mechanism prevents leveraged entry. Usps approved full-service residential locking mailbox prevents mail-identity theft. Innovative baffle door accepts small packages and deters fishing.
BrandMail Boss #ad
ManufacturerMail Boss #ad
Height11.2 Inches
Length21 Inches
Weight22 Pounds
Width10.8 Inches
Part Number7507
WarrantyLimited Lifetime Warranty



Architectural Mailboxes 8830RZ-10 Winston Post Mount Mailbox, Rubbed Bronze

ARCHITECTURAL MAILBOXES #ad - Galvanized steel construction that is fully powder coated inside and out for added corrosion resistance. X 10 in. Steel mailbox flag in contrasting Silver. Hardware and mounting bracket may be required to mount to posts not manufactured by Architectural Mailboxes not included. H x 208 in. The textured molded ABS Frame has an integral domed pull-style handle. W x 8. 9 in. D. Usps approved winston mailbox is 6. 8 in. Mounting holes in floor allows for easy installation. Predrilled 4 in.
ManufacturerArchitectural Mailboxes #ad
Height6.61 Inches
Length8.82 Inches
Weight6.61 Pounds
Width6.61 Inches
Part Number8830RZ-10
WarrantyLimited Lifetime

7. Jssmst


SM-HPB911BN, Locking Mailbox Wall Mounted Vertical– Jssmst mailboxes with Key Lock Large Capacity, Black, 14.3 x 4.1 x 11.8 Inch

Jssmst #ad - Security with key lock: Jssmst mailbox includes key lock with 2 keys for security against theft. Powder coated protect mails from heavy rain. Exterior dimentions: 14 x 11. 5 x 4 inch; inside storage area measurES: 13. 2 x 11. 2 x 3. 8 inch. Large capacity: jssmst mail box can hold magazine and large envelopes, it is able to hold days worth of mail at a time. Easy installation: jssmst mailbox includes pre-drilled holes, mounting screw and an instruction for easy installation. Heavy duty and weatherproof: Crafted with quality galvanized steel for strength and durability.
BrandJssmst #ad
ManufacturerJssmst #ad
Height11.5 Inches
Length14 Inches
Weight4.2 Pounds
Width4 Inches
Part NumberSM-HPB911BN

8. Gibraltar Mailboxes


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

Gibraltar Mailboxes #ad - Pre-drilled holes on side and bottom for mounting. Large capacity accommodates small to medium size packages. Match with any Gibraltar Mailboxes post with the letter code B. Space provided on front door for address numbers. Roller catch door latch keeps door securely in place. Some assembly is required. Powder-coated paint protects mailbox from rust and other elements. Mounting board and hardware sold separately. Constructed from galvanized steel with heavy-duty molded plastic door for added durability.
BrandGibraltar Mailboxes #ad
ManufacturerSolar Group #ad
Height11 Inches
Length23 Inches
Weight8.7 Pounds
Width9.5 Inches
Part NumberAR15B0EC
Warranty90 Day Limited Warranty