Collaborate View Manage Add-Ins SuiteTools Modify
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Section Box
Section Box…open the create window
Quick Boxselection → active 3D view, saved defaults, no windowB X
Quick Section Boxsmall View / Size / Template dialogset
Grow Boxactive box + saved stepset
Shrink Boxactive box − saved stepset
Toggle Boxoff (remembered) / restoreset

Quick Box

Automatically add a section box around the selected elements in the active 3D view — element extents plus the saved buffer. Bind it to BX to replace Revit's default.

Press F1 for more help
Section Box
▸ hover the Section Box button to toggle the flyout · hover Quick Box for the tooltip