Just cut several inches from the top half and screw the extension to the elbow on each side.
How to run two level roof downspout.
Install two u shaped downspout brackets on the corner of the house one high and one low.
Tie the string to the downspout then stretch it out and around all the stakes.
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Pound in two stakes 4 feet from the house and directly in front of each downspout.
It is very common for dormers and other roof structures that have gutters above the level of the gutters on lower portions of the roof to empty onto the roof surface.
Mark the trench line.
The water is allowed to run on the roof surface and is collected by the lower gutters.
Place other stakes spaced 8 feet apart in between.
Use a measuring tape to determine the length of the gutter.
If the gutter run measures longer than 40 feet 12 2 m it should be positioned to pitch down from the middle aimed toward a downspout at each end.
Finally trim a notch in one end of a 36 in.
Length of downspout to make a fold up extension.
Of the ground and install the last elbow.
Rain gutters should be attached to the fascia and run the entire length of the roof ending with a downspout.
Use a string and 1x2 stakes to lay out the trench.
Bring the downspout to within 1 ft.
Gutters need to slope towards the downspouts in order to function properly.
Purchase enough downspout leader to reach from the upper roof gutter to the lower roof gutter as well as from the lower roof gutter to the ground.
In this first picture one can see.