When your storage needs grow beyond a single shelving run, this 4-post double entry adder unit lets you extend your system efficiently without starting from scratch. Designed to connect to a compatible starter unit, it adds 6 openings of accessible storage space in a double-sided configuration, making it a practical choice for offices, records rooms, libraries, and facilities that need to maximize linear storage capacity along a wall or in a freestanding row.

At 30'' W x 26'' D x 76.25'' H and 138 lbs, this adder unit is built with the structural depth to support organized, high-density storage on both sides of the run. Its double entry design means staff can access shelved materials from either aisle, improving workflow in busy storage environments where retrieval speed matters.

Adder units are the building blocks of a scalable shelving system. This unit attaches to a starter section, sharing a common upright to reduce the overall footprint compared to adding standalone shelving. The result is a tighter, more organized storage layout that uses floor space efficiently. With 6 openings across its height, the unit accommodates a range of storage needs from binders and files to supplies and equipment. Made in the USA, this unit is suited for government, commercial, and institutional applications where domestic manufacturing and long-term durability are priorities.

Key Features:

• Double Entry Configuration: Accessible from both sides of the shelving run, supporting efficient retrieval in aisle-based storage layouts.
• 6 Openings: Provides multiple shelf bays across the full height of the unit, giving you flexible storage capacity for a variety of items.
• Adder Design: Connects to a compatible starter unit by sharing an upright, reducing the floor footprint and keeping rows tight and organized.
• Generous Dimensions: At 30'' W x 26'' D x 76.25'' H, this unit offers substantial storage depth and height for high-density shelving applications.
• Made in the USA: Domestically manufactured, making it a strong fit for government, institutional, and commercial projects with origin requirements.

This 4-post double entry adder shelving unit is a straightforward way to grow an existing shelving system with minimal added footprint. It is well suited for records storage, supply rooms, libraries, and any facility that needs organized, accessible shelving at scale.