Wire Shelving Measurement Chart

Precision is the foundation of efficient storage. Whether you are engineering a high-density warehouse layout or optimizing a commercial kitchen, understanding the exact footprint and usable shelf space of your units is critical for a perfect fit.

Use this guide to determine the Actual Dimensions of your shelving, beyond the nominal list sizes.

Understanding the Three Dimensions of a Shelf

When planning your space, there are three distinct measurements to consider:

1. List Dimension (Nominal): The standard industry size used for ordering (e.g., 18" x 36").

2. Outer Dimension (Footprint): The total physical space the unit occupies, measured from the outer edge of one post collar to the other.

3. Inner Dimension (Clearance): The clear, usable space between the posts. Use this to verify if your bins, equipment, or inventory will fit on the shelf surface.

List dimension = Measurement listed on Shelving.com
Outer dimension = From left edge of shelf collar to right edge of adjacent collar
Inner dimension = Distance between posts measured at shelf collars

All measurements are presented to the nearest thousandth of an inch.

Vertical Planning: Heights & Customization

Shelving.com provides the industry’s widest range of vertical options. Our standard posts range from 6" to 96" tall, and we offer professional custom cutting services for heights in between.

Height Factors to Consider:

• Leveling Feet: Each post includes an adjustable leveling foot to ensure stability on uneven floors. This adds approximately 0.5" to 1.0" to the overall height.

• 1-Inch Adjustability: Posts feature locator rings spaced at 1" increments. This allows you to customize the shelf heights to match the specific height of your items, maximizing vertical "cube" space.

• Casters (Mobile Units): If adding casters, remember to account for the additional 4" to 6" of height added by the wheel and stem.

Technical Manufacturing Specifications

Our wire shelving is engineered for medium to heavy-duty commercial applications, maintaining strict manufacturing tolerances for structural integrity.

• Load Capacity: Up to 800 lbs per shelf (Uniformly Distributed Load).

• Mesh Density: 0.788" spacing between wire rungs (prevents small items from tipping).

• Wire Gauge: Rungs are .134" thick; the lower frame is a reinforced .236" for maximum rigidity.

• Post Specs: 1-inch diameter round steel tubing with 12 threads-per-inch thread count for leveling feet.