Range.RowHeight Property (Excel)
Returns the height of all the rows in the range specified, measured in points. Returns null if the rows in the specified range aren’t all the same height. Read/write Variant.
You can use the Height property to return the total height of a range of cells.
Differences between RowHeight and Height include the following:
Height is read-only.
If you return the RowHeight property of several rows, you will either get the row height of each of the rows (if all the rows are the same height) or null (if they’re different heights). If you return the Height property of several rows, you will get the total height of all the rows.