Centre drop fitting is used to connect one gutter to another with an outlet for water. Also called 'RUNNING OUTLET'. Outlet size- 160 MM (6 inches) round. The large outlet size proportional to the gutter width ensures smooth & fast drain. It is made from best quality uPVC with glossy finish. It locks the gutter inside the clip which prevents the edges from flipping out. Use self-screws to fix the gutter. Use silicone sealant inside the slot first and then slide the gutter inside it.