Your VersaMount Kit 3 should come with the following:
Step 1: Select a setup location. Find a sturdy surface the U-bracket will be secured to, as this will determine the type of screw needed. The side of a barn is a good example.
Step 2: Fasten the U-bracket wall mount to the surface, making sure the U-bracket is straight.
Step 3: Check with a bubble level. Place a bubble level on a center pole. Check for level, from front to back and side to side
U-bracket mount: 1-5/8” or LxWxH 3.15” x 1.57” x 0.79”
Pole: 1-5/8” diameter x 16’ length
Pole Cap: 1-5/8” diameter