Collection Unit for 7 Door High 4B+ Mailbox Units - Aluminum - Front Loading - USPS AccessCollection Unit for 7 Door High Mailbox Units The Collection Unit is designed for 7 Door High 4B+ Mailbox Units, crafted from durable aluminum and featuring front loading with USPS access. Ideal for secure and efficient mail collection. Key Features: Durable Construction: Made from high quality aluminum for long lasting use. Front Loading Design: Allows easy access for mail collection. USPS Access: Ensures compatibility with USPS standards. Compact