Range Select

I am trying to select a range using VBA and have run into run-time error '1004': Method 'Range' of object '_Global' failed.
If I write the code this way it works fine:

Range("A" & lastrow  + 2).Select

I have lastrow set this way:

lastrow = Worksheets("Detail Inventory").Range("B5").End(xlDown).Row

But if I expand the range by writing the code this way:

Range("A & lastrow + 2:U47").Select

I get the run-time error.

Anybody have an idea what I am doing wrong?

Thanks

Thank you! That was what I needed.