This 4-post single entry adder shelving unit is built to extend an existing 4-post shelving system, giving facilities managers, archivists, and storage planners a straightforward way to add organized vertical capacity without starting from scratch. At 36'' W x 16'' D x 88.25'' H with 7 openings, it delivers a full column of accessible storage space that integrates cleanly into a growing shelving run.

Weighing 146 lbs and made in the USA, this adder unit is a substantial, purpose-built component suited to demanding storage environments where reliable organization and long-term durability matter.

Single entry adder units are designed to share a common upright with an existing starter or adjacent unit, making them the efficient choice when expanding a shelving row along a wall or within a room layout. The 7 openings across the 88.25'' height provide consistent, evenly distributed access points for binders, boxes, files, or other stored materials. This unit fits naturally into libraries, records rooms, government facilities, and commercial storage areas where a structured, scalable shelving system is already in use or being planned. Professional installation by a Certified Installer is required for full warranty coverage and is recommended to ensure proper alignment within the shelving run.

Key Features:

• Single Entry Adder Configuration: Designed to attach to an existing 4-post shelving run, sharing uprights to maximize floor space efficiency when expanding storage capacity.
• 7 Openings: Provides seven evenly distributed access points across the full height, supporting organized storage of binders, boxes, files, and similar materials.
• Full-Height Design at 88.25'': Maximizes vertical storage in the footprint, making it well suited to high-density storage environments where floor space is limited.
• 16'' Depth: A compact 16'' depth keeps the unit accessible from the aisle while fitting within standard shelving room layouts.
• Made in the USA: Manufactured domestically, supporting quality assurance and consistent production standards.
• Limited Lifetime Warranty: Backed by a limited lifetime warranty for the original purchaser when installed by a Certified Installer, with qualifying replacement parts supplied for the product life.

This 4-post single entry adder shelving unit is a practical, scalable solution for any facility looking to grow an organized shelving system. With 7 openings across a 36'' W x 16'' D x 88.25'' H footprint and a 146 lb build, it is ready to handle the demands of active storage environments. Professional installation by a Certified Installer is required to qualify for full warranty coverage.