The offset is about 5" for a 4x5" downspout
The average length is about 20" - This unit is 2 separate pieces so you do have a bit of wiggle room for length
This is called a Style B. The wide part against the wall and the leg will take you left or right.
White factory finished aluminum downspout section
So you just installed the Downspout Diverter
and now you are trying to get the downspout to line up so it goes down
the wall where you had it before. To complete that move you are going to
need this zig zag leg.