This Adaptor will be useful if you are installing a railing on a deck with odd angles, like a hexagon. The adaptor lets you install a horizontal railing section at a 45° angle.
The Adaptor is designed to work with Deckorators® ALX Classic or Estate rail kits that use 2.5-inch square posts. It MUST be paired with the ALX Classic rail brackets (in-line or stair). The 2 pieces fit together to form the angle and and then connect to the post.