When your storage needs grow beyond a starter bay, this 4-post single entry adder shelving unit lets you extend your system without starting over. Designed to connect to an existing 4-post shelving run, it adds 5 open storage bays in a 30'' W x 18'' D x 76.25'' H footprint, making it a practical solution for offices, archives, stockrooms, and facilities that need more organized vertical storage without consuming additional floor space.

At 76.25'' tall, this adder unit takes full advantage of vertical space, and the 18'' depth keeps shelves accessible while maintaining a compact profile in aisles and work areas. With 5 openings per unit, you gain meaningful capacity for binders, boxes, supplies, or equipment in a single addition to your shelving line.

Single entry adder units are built to share a common upright with the adjacent bay in a shelving run, which reduces the number of posts needed and keeps the overall system footprint tight. This configuration is the standard choice when building out a row of shelving where each added section connects to the last. The result is a clean, continuous shelving line that is easier to plan, install, and reconfigure as storage needs change over time. At 100 lbs, this unit is a substantial, well-built addition suited to demanding storage environments.

Key Features:

• Single Entry Adder Configuration: Shares an upright with the adjacent bay to minimize posts and floor space while extending your shelving run efficiently.
• 5 Storage Openings: Provides five accessible bays per unit, adding meaningful capacity for binders, boxes, files, or supplies in a single addition.
• 30'' W x 18'' D x 76.25'' H Footprint: A tall, space-efficient profile that maximizes vertical storage without requiring a wide or deep floor footprint.
• Made in the USA: Manufactured domestically, supporting quality consistency and shorter lead times for commercial and institutional projects.
• 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 straightforward, reliable way to grow an existing shelving system one bay at a time. It suits offices, government facilities, libraries, warehouses, and any environment where organized, accessible open shelving is a daily operational need.