Expanded Metal

McNICHOLS® Expanded Metal - Standard

Standard Expanded Metal, also known as Raised Expanded Metal, features a surface of diamond-shaped openings that are slightly raised relative to a flat surface. The product comes in a variety of opening sizes, gauges, materials, and directional patterns. Please make McNICHOLS® Expanded Metal your standard!


Made by slitting and stretching metal sheets to create diamond-shaped openings, McNICHOLS® Expanded Metal forms screens, window security panels and machine guards to name a few applications for this practical and versatile product line. In the decorative version of the product, shelving, signage, and ceiling tiles are among the most popular applications. Expanded Metal is supplied in a Standard (raised) diamond pattern or a Flattened diamond pattern. Grating and Catwalk Expanded Metals are also part of our wide range of selections available directly from inventory. Numerous gauges, opening sizes, materials, and sheet sizes are options that will surely fit your project requirements!


The following selections are important considerations to help you choose the right McNICHOLS® Expanded Metal product for your project or application. Please specify:



Product applications/uses include screening, ventilation, security enclosures, machine guards, ramps,catwalks, walkways, platforms, cabinet inserts, and more. We invite you to browse Expanded Metal applications in our Gallery.


Design Direction

Determine the design direction (pattern direction). The Long Way of Design (LWD) runs parallel to the length of the sheet for the majority of inventory items.


Expanded Type

Choose from a wide variety of Flattened, Standard, Grating, Catwalk, or Designer Expanded types.


Percent Open Area

Choose the percentage of open area desired in the Expanded Metal sheet.


Primary Material

Select the primary material type including Aluminum, Carbon Steel, Galvanized Steel or Stainless Steel,taking into consideration climate or environmental realities. We provide more information on Primary Material Types in the links provided in the Overview section on the Expanded Metal Resources landing page.


Product Size, Form & Quantity

Determine the number of sheets and/or sizes including cut-to-size pieces and shearing preference (e.g. Bond Shear or Random Shear).


Product Finish

Inventory is typically “mill finish” unless otherwise specified. We provide more information on Product Finishes in the links provided in the Overview section on the Expanded Metal Resources landing page.


Special Requirements

Specify any requirements such as fabrication, edge treatments, finishing, non-standard tolerances, etc.


Style & Type

Choose the Short Way of Design (SWD) measurement in inches, material gauge number or thickness in inches and expanded type (i.e. 3/4 #9 Flattened). For Grating and Catwalk items, select the pounds per square foot desired (e.g. 3.14 # Grating (Standard), etc.).



Determine if Expanded Metal Accessories such as Angle, Flat Bar, U-Edging framing solutions or Fasteners are required for your application.

Load Tables

Helpful Expanded Metal reference guides to save, print, or share!

Grating & Catwalk - Metals (Aluminum, Carbon Steel & Stainless Steel)