This 4-post single entry adder shelving unit is designed to extend an existing shelving run, giving warehouses, stockrooms, archives, and institutional storage areas more capacity without starting from scratch. At 48'' W x 16'' D x 88.25'' H with 7 openings, it provides a tall, organized storage column that integrates directly into a compatible 4-post shelving system.

Made in the USA, this adder unit is built to connect to a starter unit, sharing a common upright to maximize floor space efficiency. The 7-opening configuration gives you multiple shelf levels to sort and separate items by size, frequency of use, or category, making it a practical choice for facilities that need structured, scalable storage.

Single entry adder units are the standard way to grow a 4-post shelving system along a wall or in a back-to-back row. Because the adder shares an upright with the adjacent starter or adder unit, you gain a full bay of storage while using less floor space and fewer components than adding a standalone unit. This makes the adder configuration the right choice when planning a shelving run that will expand over time or needs to fit a defined aisle layout. The 16'' depth keeps the profile compact while still accommodating standard storage bins, binders, boxes, and similar items.

Key Features:

• Single Entry Adder Configuration: Designed to attach to an existing 4-post starter or adder unit, sharing an upright to save floor space and reduce hardware.
• 7 Openings: Provides multiple shelf levels for organized, tiered storage of a wide range of items.
• Tall 88.25'' Height: Maximizes vertical storage capacity, making efficient use of available ceiling clearance.
• 48'' W x 16'' D Footprint: Wide enough for standard storage loads while the 16'' depth keeps aisles clear and the unit easy to access.
• USA Made: Manufactured domestically for consistent quality and reliable lead times.
• 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, scalable solution for facilities that need to grow their storage capacity in an organized, space-efficient way. With 7 openings across a 48'' W x 16'' D x 88.25'' H frame, it fits naturally into planned shelving runs and delivers reliable, long-term storage performance.