How do I select the correct size strut cap for different strut channel dimensions?

Selecting the correct strut cap size is critical for a secure fit and effective protection. Strut caps are designed to match standard strut channel dimensions, such as 1-5/8", 1-1/2", or 1-1/4" widths, corresponding to the industry-standard strut profiles.

To determine the right cap size, measure the width and height of your strut channel and consult the manufacturer's sizing chart. Spartan Dynamics provides detailed dimension guides on the Strut Caps product family page to help ensure proper selection.

Using the correct size prevents water intrusion and cable abrasion, which is especially important in the Northeast where freeze-thaw cycles and high humidity can exacerbate wear. For specific sizes, check out our 1-5/8" strut caps and 1-1/2" strut caps designed for precise compatibility.