This is a universal replacement top bracket (also called a fixture) for garage doors. It is for use on overhead sectional garage doors, and replaces a variety of different shapes and sizes of brackets.This bracket or fixture is for use only on the upper section of the top garage door panel, where it doesn't connect to another panel. It holds a standard residential size garage door roller. It is fully adjustable, includes all nuts and bolts, and complete installation instructions are found on the back of the package. You can also find written and video instructions on our website.