Corner Drop/Elbow Drop fitting is used to turn the direction of the gutter in 90 degree along with an outlet.  Lines running through the edges ensures strength along with aesthetics. It locks the gutter inside the clip which prevents the edges from flipping out. Outlet size is 90 MM (3 inches round). You could use Round X Square adaptor fitting to connect our Hysquare pipe as outlet for better aesthetics. Available in multiple colors to match your gutter color. Use self-screws to fix the gutter. Use silicone sealant inside the slot first and then slide the gutter inside it. Solvent cement is not required.