Spin-Digger Stanford Double

Spin-Digger Stanford Double - Heavy Duty Aluminum Post with Dual Mailboxes

The Spin-Digger Stanford Double is a complete dual curbside mail delivery solution engineered for properties needing two USPS-compliant mailboxes on a single architectural post. The system pairs two standard-size steel mailboxes with a 3" round fluted aluminum post, two address plaques, a heavy-duty mailbox mounting plate (lifetime guaranteed), and an elegant aluminum ball topper — all finished in durable black powder coat for a unified, professional curbside presentation.

Why Choose Spin-Digger Stanford

Stanford-line systems use aluminum where lower-tier kits cut corners with painted steel. The fluted post profile delivers both classic architectural styling and superior structural strength, while the lifetime-guaranteed mounting plate ensures the dual mailbox arm never sags, shifts, or loosens. This is a buy-once, install-once system.

Key Features

• Heavy-duty 3" round fluted aluminum post construction
• 6'6" total post height (78" overall) — meets USPS mailbox installation requirements
• Two USPS-approved standard-size steel mailboxes included
• Two heavy-duty address plaques for clear identification of each unit
• Lifetime guaranteed mailbox mounting plate
• Aluminum ball topper — elegant finish + prevents water intrusion into the post
• Durable black powder-coat finish throughout for unified appearance
• Weather-resistant aluminum prevents rust and corrosion
• Designed for direct burial installation — no surface plate required

What's Included in the Box

• 3" round fluted aluminum post, 6'6" tall
• Heavy-duty mailbox arm for dual mailbox mounting
• Two (2) standard-size steel mailboxes — black finish
• Two (2) address plaques for unit identification
• Heavy-duty mailbox mounting plate (lifetime guaranteed)
• Aluminum ball topper
• All necessary brackets and mounting components

Specifications

• Post material: Heavy-duty fluted aluminum
• Post profile: 3" round, fluted design
• Post height: 6'6" (78" total length)
• Mailbox count: 2 (standard size, steel)
• Address plaques: 2 (heavy-duty, post-mounted)
• Mounting plate: Heavy-duty, lifetime guaranteed
• Finial: Aluminum ball topper
• Finish: Durable black powder coat / paint
• Installation type: Direct burial (in-ground)

Installation

• Installation type: Direct burial — no surface plate needed
• Recommended depth: 20–24" below ground for maximum stability
• Above-ground height after install: approximately 54–58" (meets USPS height requirements)
• Post footprint: 3" round diameter with fluted profile
• Recommended: Concrete footer for long-term stability in soft soil or freeze/thaw climates
• Suitable for: Standard curbside installation, residential driveways, shared driveways

Lifetime Guaranteed Mounting Plate

The heavy-duty mailbox mounting plate that holds the dual mailbox arm to the post is guaranteed for life. This is the component that fails first on lower-tier dual mailbox kits — sagging arms, loosening fasteners, weather damage. Spin-Digger backs the mounting plate against all of that, for as long as you own the system.

USPS Compliance

• Post height meets USPS mailbox installation requirements
• Dual mailbox positioning allows safe mail delivery from a USPS carrier vehicle
• Designed for standard curbside mail delivery service
• Address plaques positioned for convenient carrier and resident identification
• Meets residential mail delivery standards for two-address properties

See It Installed

Best For

• Duplex and multi-family residential properties
• Shared driveway installations
• Side-by-side homes with shared curbside mailbox setup
• New residential construction developments
• Estate properties with guest house or rental unit
• Replacement of existing dual mailbox post systems
• Any two-address property wanting a single unified curbside install