This 4-post single entry adder shelving unit is designed to extend an existing shelving run, giving file rooms, archives, supply areas, and general storage spaces more organized capacity without starting from scratch. At 42'' W x 18'' D x 88.25'' H with 6 openings, it provides a tall, efficient storage column that makes the most of vertical space in any facility.

As an adder unit, it shares a common upright with the adjacent starter section, keeping the overall footprint compact while adding meaningful shelf space to the row. The 18'' depth profile keeps aisles clear and suits environments where space efficiency is a priority.

Single entry adder units are the practical choice when a shelving system needs to grow along a wall or within a row. They connect to a compatible starter unit to form a continuous run, making them well suited for planned storage buildouts in offices, government facilities, libraries, and warehouses. The 6-opening configuration supports flexible shelf placement to accommodate binders, boxes, files, or other stored materials at varying heights. At 158 lbs, this is a substantial, heavy-duty unit built for long-term use.

Key Features:

• Adder Configuration: Designed to attach to a compatible starter unit, sharing an upright to extend your shelving run efficiently without duplicating structural components.
• 6 Openings: Provides six shelf bays for flexible organization of files, binders, boxes, or supplies at adjustable heights.
• Tall 88.25'' Height: Maximizes vertical storage capacity, making it a strong fit for high-density file and archive rooms where floor space is limited.
• 18'' Depth: A shallow profile that keeps aisles accessible and suits standard file and binder storage without wasted space.
• 42'' Width: A practical bay width that accommodates standard storage materials across all six openings.
• USA Made: Manufactured domestically for quality and supply chain reliability.

This 4-post single entry adder shelving unit is a straightforward way to grow an organized shelving system one bay at a time. With 6 openings across a 42'' W x 18'' D x 88.25'' H footprint and a product weight of 158 lbs, it is built for demanding storage environments that need reliable, long-term capacity.