Diamond plate is also known as checker plate, tread plate, and floor plate; it is a type of metal stock with a regular pattern of raised diamonds or lines on one side. The reverse side is featureless, usually steel, stainless steel, or aluminum.  The added texture reduces the risk of slipping, making diamond plate a solution for stairs, catwalks, walkways, and ramps in industrial settings.  It is frequently used on the interior of ambulances and the footplates of firetrucks. Additional applications include truck beds and trailer floors.

The attractive appearance of diamond plate makes it a popular choice for truck beds, open components, and stairways. It is used extensively for decks, catwalks, trench covers, platforms, running board steps, dock boards, truck compartments, tool storage boxes, conveyors, floors, etc.

Aluminum diamond plate is resistant to rust and corrosion, which makes it extremely hygienic. Aluminum is easy to wash and can withstand harsh chemicals and cleaning products. Along with its slip-resistant surface, diamond plate’s ability to be cleaned easily makes it a great choice for industrial kitchens, bathrooms, and walk-in freezers.

Mark Metals maintains a large in-house inventory of commercial-grade diamond plate including carbon steel, stainless steel, galvanized, and aluminum.  Our diamond plate and other metal inventory is available for quick pick-up in our Reading, Pennsylvania location. We can also deliver metal supplies and custom metal fabrication products to your job site within a 60-mile radius of our facility.  We can also ship nationwide through common carriers.

Regardless of the size of your order, Mark Metals is known for its personalized treatment of each customer, beginning with the initial call or email to the delivery of the products. Mark Metals is your best choice for cut-to-size metal supplies.  Each order is treated as though it is our only order. If an item is not in our stock, we will special order it for you.  We will get you what you need.

Standard Diamond Plate Sizes

Standard Diamond Plate Sizes (Custom Cuts Available)
  • 12″ x 12″ / 1′ x 1′
  • 24″ x 24″ / 2′ x 2′
  • 48″ x 48″ / 4′ x 4′
  • 48″ x 96″ / 4′ x 8′
Weights / Gauges (Other Weights Available by Order)
  • 1/8″
  • 3/16″
  • 1/4″
Diamond Plate Metal Types:
  • Steel
  • Stainless Steel
  • Carbon Steel
  • Galvanized
  • Aluminum
Diamond Plate Tread Plate Checker Plate Aluminum, Steel, Galvanized, Mild, Alloy
Diamond Plate Tread Plate Checker Plate Aluminum, Steel, Galvanized, Mild, Alloy
Diamond Plate Tread Plate Checker Plate Aluminum, Steel, Galvanized, Mild, Alloy
Diamond Plate used on a Catwalk for Slip Resistance


A division of The Rose Corporation