Revit.Element.IntersectsElement
Finds intersections (clashes) between two sets of elements. Elements in set B that intersect set A are ouput into sublists (the clash result). Self-intersection is automatically prevented if an element is found in both lists.

The node is optimsed to output rapid results up to 99.5% faster than any other intersection technique.

Use IsElementSupported to check that elements are supported by the node.

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