Center drop fitting is used to connect one gutter to another with an outlet for water. Also called ‘Running Outlet’. Outlet size- 90 mm (3 inches) round. You could use Round X Square adaptor fitting to connect our Hysquare pipe as outlet for better aesthetics. It is made from best quality uPVC with glossy finish. It locks the gutter inside the clip which prevents the edges from flipping out. 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.