09/30/2026
How to Measure for Steel Windows — Before You Order
One of the easiest ways to create problems during a steel-window installation is to confuse the rough opening with the actual frame size.
Before fabrication, builders and homeowners should also verify:
• Width at multiple locations
• Height at multiple locations
• Diagonal measurements
• Whether the opening is square, level, and plumb
• Wall and jamb depth
• Fixed vs. operable configuration
• Casement handing and swing direction
• Required installation clearance
• Exterior finish and flashing conditions
USA Builders Depot has put together a straightforward steel-window measuring guide to help builders, architects, designers, and homeowners understand what needs to be checked before ordering.
Read the full guide:
https://usabuildersdepot.com/blogs/news/how-to-measure-steel-windows-rough-opening
USA BUILDERS DEPOT
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