16 Door Grey Postal Products Unlimited F-Spec Cluster Mailbox with Pedestal - Type 3 CBU

Sixteen Tenant Compartments and Dual Parcel Lockers in a USPS Type 3 CBU

The Postal Products Unlimited 16-Door F-Spec Cluster Mailbox in Grey is the highest-capacity unit in our F-Spec range — sixteen tenant compartments, two parcel lockers (one tall, one standard), and an integrated outgoing mail slot, all from a single pedestal-mounted USPS-approved cluster mailbox. Specified by the USPS as a Type 3 CBU, this unit is the standard for larger residential developments, apartment buildings, and commercial properties where centralized mail delivery serves more than a dozen tenants. The grey powder coat finish keeps the unit visually neutral against virtually any building palette.

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 16 tenant compartments
• 2 parcel lockers (10¼" tall and 13¾" tall) for direct package delivery
• 1 outgoing mail slot for tenant outbound mail
• Heavy-duty pedestal, rubber gasket, and template
• USPS-developed tenant locks with weather shield (3 keys per door)
• Installation guide and template

Engineered Against Tampering

• 360° wrapped hinges block hinge-pin attacks
• Reinforced lock cam with reduced pry geometry
• Overlapping master doors prevent forced-entry leverage
• Reinforced tenant gaps stop fishing tools
• Sealed locks for all-weather reliability

Specifications

• USPS Compliance: Approved F-Spec, Type 3
• Tenant doors: 16 @ 12⅞" × 3"
• Parcel lockers: 2 (10¼" and 13¾" tall)
• Outgoing slot: 10¾" × 1"
• Assembled dimensions: 30½" L × 18⅞" W × 62" H
• Weight: 114 lbs
• Construction: Stainless steel and aluminum, corrosion-resistant
• Finish: Grey powder coat
• Cross-reference: Equivalent to Auth-Florence 1570-16 and Salsbury 3316

Where It's Used

Sixteen-unit and larger apartment buildings, mid-rise condo developments, commercial mail centers, gated communities, mobile-home parks, RV resorts, and any property where the USPS specifies a Type 3 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.