The 4" Filter Angle Mounting Bracket Kit mounts the See Through Filter Assembly to a flat surface on an angle. With the ability to angle the filter until it's level. All See Through Filter Assemblies will work properly when mounted with the top level or close to level. It can be mounted to a flat surface with two 3/8" mountingholes with a center to center hole spacing of 2.600". Brackets are made out of 6061 T6 billet aluminium for strength and durability. This bracket is black anodised for easier maintenance. This kit comes with fasteners to bolt the bracket to the filter assemblies.