Round rail bracket. Designed as a support for #5400 round rail. Mounts directly to the side of building. Works with #5438 1-1/2" door and #5439 3-1/2" door snap-on flashing brackets. Use #5450 flashing profile with #5438 1-1/2" door brackets. 1 bracket should be installed every 2 feet of rail. Should be used with 1 splice bracket on the end of rail to lock the rail in place. Includes lag bolt.