Fits 5" and 6" K-Style gutter. Can also fit any other flat bottom profile gutter that can house the outlet.
The advantage of using an oval outlet is that it will fit both square and round outlets. For example, a 2" x 3" size will also fit a 3"
pipe while a 3" x 4" nominal will also fit a 4" downspout or elbow.
Also known as goose neck / drop.