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

Sixteen-Door Black F-Spec CBU — Modern Finish, USPS-Approved Construction

The Postal Products Unlimited 16-Door F-Spec Cluster Mailbox in Black delivers sixteen tenant compartments, two parcel lockers, and an outgoing mail slot in a single matte-black pedestal-mounted unit. The black powder-coat finish reads as contemporary and architectural — the most common choice on new multi-family construction with dark fascias, window trim, and modern signage. Underneath: USPS-approved F-Spec, Type 3 construction with reinforced security and weatherproof locks.

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" and 13¾" tall)
• 1 outgoing mail slot
• Pedestal, rubber gasket, and template
• USPS-developed tenant locks with weather shield (3 keys per door)
• Installation guide and template

Security Features

• 360° wrapped hinges defeat hinge-pin attacks
• Reinforced lock cam with reduced pry exposure
• Overlapping master doors block forced-entry leverage
• Strengthened tenant gaps prevent fishing
• Sealed dust- and rain-resistant locks

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: Black powder coat
• Cross-reference: Equivalent to Auth-Florence 1570-16 and Salsbury 3316

Best Fit For

Modern apartment construction, mixed-use developments, black-trim multifamily buildings, contemporary HOAs, urban townhouse rows, and properties where matte black is the design language.

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.