How wide is the opening?
The rough opening for the door or window — stud to stud.
A standard door is about 3 ft; a wide slider can be 6 ft or more.
What kind of wall?
Load-bearing walls carry weight from above — they need beefier headers.
Pick a wall type to continue.
Your header size
Use this header
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Rule of thumb only — confirm with local code; when in doubt, go bigger.
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🧰 Tools you'll need
Tap to check off as you load up.
Est. project cost (optional)
File this estimate under a job name or PO to track what to order. Leave blank to file under "General".
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