When your existing shelving system runs out of room, this 4-post single entry adder unit lets you extend your storage capacity without starting over. Designed to connect to a compatible 4-post shelving starter bay, this adder section adds 7 openings across a full 88.25'' height, giving you substantial vertical storage in a slim 10'' depth footprint. That shallow profile makes it especially practical in corridors, back-of-office areas, or any space where floor depth is limited but vertical room is available.

At 42'' wide and weighing 141 lbs, this is a substantial, purpose-built shelving component suited to organized storage of files, binders, supplies, or other materials in office, government, institutional, or facilities environments where a structured, expandable shelving system is the right long-term solution.

This adder unit is intended to be added to an existing 4-post shelving starter section, sharing a common upright to reduce the overall footprint and cost compared to adding a standalone unit. The single entry configuration means shelves are accessed from one side, making it well suited for against-the-wall or back-to-back row installations. With 7 openings distributed across the full height, the unit supports flexible shelf placement to accommodate items of varying sizes. Installation by a Certified Installer is recommended to qualify for the full warranty coverage.

Key Features:

• 7 Openings: Provides multiple shelf positions across the full 88.25'' height, supporting flexible organization of files, binders, supplies, and more.
• Slim 10'' Depth: The shallow footprint fits in tight spaces such as corridors, narrow aisles, and wall-side runs where deeper shelving would not work.
• 42'' Wide Adder Configuration: Connects to a compatible 4-post starter bay to expand storage capacity while sharing an upright and minimizing floor space used.
• Single Entry Access: Shelves are accessed from one side, making this unit ideal for wall-mounted rows or back-to-back shelving arrangements.
• Substantial Build at 141 lbs: The unit weight reflects a sturdy, commercial-grade construction suited to demanding storage environments.
• 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 choice for facilities, offices, archives, and institutional settings that need to grow an existing shelving system efficiently. Its tall profile, slim depth, and 7-opening layout make it a versatile addition to any organized storage row.