This 4-post single entry adder shelving unit is designed to extend an existing 4-post shelving system, giving facilities managers, warehouse teams, and office storage planners a straightforward way to add organized capacity without starting from scratch. At 30'' W x 16'' D x 88.25'' H with 7 openings, it delivers a full column of accessible shelf space that integrates cleanly into a growing storage layout.

The adder configuration shares a common upright with an adjacent starter or adder unit, making it a space-efficient choice when expanding a row. Seven openings provide flexible shelf placement to accommodate a range of stored items, from binders and files to supplies and equipment.

Single entry adder units are used in rows alongside compatible starter units to build out high-density shelving runs in offices, records rooms, libraries, government facilities, and industrial storage areas. The adder attaches to an existing unit in the row rather than standing independently, so it requires a compatible starter or neighboring adder to anchor the shared upright. This configuration keeps the overall footprint compact while maximizing linear shelf space per square foot of floor area. Installation by a Certified Installer is required for full warranty coverage, making this unit well suited for planned facility buildouts and managed storage projects.

Key Features:

• 7 Openings: Provides multiple shelf levels in a single column, supporting flexible organization of files, supplies, or equipment across the full height of the unit.
• Adder Configuration: Shares an upright with an adjacent unit to reduce the number of posts needed per row, keeping your storage footprint efficient as you expand.
• Full-Height Design at 88.25'': Maximizes vertical storage in standard-height rooms, making the most of available wall and aisle space.
• 16'' Depth: A compact shelf depth suited for files, binders, and similar stored items without projecting far into aisles.
• Limited Lifetime Warranty: Covered by a limited lifetime warranty for the original purchaser when installed by a Certified Installer, with qualifying replacement parts supplied for the product life.
• U.S. Made: Manufactured domestically, supporting consistent quality and availability for facility and government procurement projects.

This 4-post single entry adder shelving unit is a practical choice for any facility looking to grow an organized, high-density shelving row. With 7 openings across a 30'' W x 16'' D x 88.25'' H footprint, it adds meaningful capacity to an existing system while keeping the installation clean and the row structure intact.