Welcome to the Budget Mailboxes Resource Center

Access installation guides, maintenance manuals, and technical specifications for 4C, CBU, and USPS-approved mailboxes. Created for contractors, architects, property managers, and installers who need precise details for successful projects.

Installation Guides

4C Mailbox Install

Complete manual with USPS compliance, safety procedures, and step-by-step photos. Essential for professional installers on multi-tenant and commercial properties.

1570 Cluster Install

Foundation requirements, electrical connections, and USPS approval processes. Includes site prep checklists and troubleshooting for contractors.

Parcel Locker Installation

Detailed 1590 OPL installation with integration requirements, master key procedures, and package retrieval processes for parcel delivery solutions.

Mail Slot Plug Installation

Step-by-step instructions for securing unused mail slots in apartments and commercial buildings. Simple process with tool list and safety tips.

Converting CBU to Private Delivery

Convert USPS cluster mailbox service to private delivery. Covers detailed regulations, required notifications, and essential physical modifications for property managers.

Pro Installation

Professional installation network nationwide for CBU and 4C systems. Expert installers handle permits, compliance, and setup. Your complete mailbox solution.

Maintenance Resources

4C Maintenance Guide

Comprehensive manual with schedules, issue resolution, and part identification. Designed for building maintenance teams to ensure optimal mailbox performance.

Parcel Locker Maintenance

Lock servicing, weather seal inspection, and delivery notification troubleshooting for Florence 1590 parcel lockers. Essential for reliable operations.

CBU Cheat Sheet

Quick troubleshooting steps, inspection checklist, and emergency contacts for Florence 1570 cluster mailboxes. Perfect for on-site maintenance teams.

Technical Specifications

Foundation Specs

Engineering specifications for CBU foundations including concrete mix, reinforcement details, drainage, and load calculations. Critical for contractors.