The half round gutter outlet, also known as the "B" style outlet, is the fitting used to connect the gutter to the downspout. The top of the outlet is curved to match that of a half round gutter. Install the B style outlet from inside the half round gutter and into the downspout.
Soldering is the recommended method of joining the B style outlet to the gutter.
Both the 3" and 4" outlet fit inside 5" and 6" gutters.
Call for custom sizes.