13 Door Grey Postal Products Unlimited F-Spec Cluster Mailbox with Pedestal - Type 4 CBU

Thirteen USPS-Approved Tenant Compartments in a Neutral Grey Finish

The Postal Products Unlimited 13-Door F-Spec Cluster Mailbox in Grey a USPS-approved, pedestal-mounted Type 4 CBU built for property managers, builders, and HOAs who need secure outdoor mail and package delivery for up to thirteen tenants. The neutral grey powder-coat finish blends with virtually any property palette — brick, beige, stucco, or sided exteriors — while the reinforced stainless-steel and aluminum construction stands up to weather, vandalism, and decades of daily use.

About the Manufacturer — Postal Products Unlimited

Postal Products Unlimited (PPU) is a USPS-approved manufacturer of commercial cluster mailboxes with a 25+ year history and ISO 9001:2015 certified quality management. PPU's F-Spec CBUs share the USPS specification with Auth-Florence's 1570-series and Salsbury Industries' 33-series cluster mailboxes — same dimensions, same door counts, same security features, same USPS approval — and give you a third brand option when matching an existing on-property mailbox or sourcing a backup supplier. We carry the full line in all four powder-coat finishes.

What's Included

• USPS-approved CBU with 13 tenant compartments
• 1 parcel locker (10¼" tall) for secure package delivery
• 1 outgoing mail slot for tenant outbound mail
• Heavy-duty pedestal with rubber gasket and anchor template
• USPS-developed tenant locks with dust/rain shield (3 keys per door)
• Installation guide and template

Security Built In

• 360° wrapped hinges to defeat hinge-pin attacks
• Reinforced lock cam and reduced pry points
• Master doors that overlap when shut to resist forced entry
• Strengthened tenant gaps to prevent fishing attacks
• Upgraded postal-grade locks with weather-sealed shield

Specifications at a Glance

• USPS Compliance: Approved F-Spec, Type 4
• Tenant doors: 13 @ 12⅞" × 5"
• Parcel lockers: 1 (10¼" tall)
• Outgoing slot: 10¾" × 1"
• Assembled dimensions: 30½" L × 18⅞" W × 62.562" H
• Weight: 143 lbs
• Construction: Stainless steel and aluminum, corrosion-resistant
• Finish: Grey powder coat
• Cross-reference: Equivalent to Auth-Florence 1570-13 and Salsbury 3313

Where It's Used

Thirteen-unit apartment buildings, twelve-unit condo buildings with a manager box, HOA common areas, gated communities, mobile-home parks, office parks, and any property where the USPS specifies a Type 4 CBU.

Downloads & Documentation

• CAD Drawings (PDF)
• CAD Drawings (DXF)
• CAD Drawings (DWG / AutoCAD)
• Main Instructions (PDF)
• Installation Instructions (PDF)
• Engraving Instructions (PDF)

Ships in 2–3 business days with standard numbering. Custom numbering is available on request and may take up to an additional 5-6 days.