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Question: Is this mount narrow enough to be attached to a 4 inch wide flat surface?
Document: I needed to mount on my fascia below my gutter but the base is relatively long and skinny and the fascia was only 4&#34; or so wide. Fortunately there were enough mounting holes that I could still get six screws in half the base.
I bought amplified antenna and was referred to this mounting bracket. the antenna has a 3/4 inch mount at the bottom whereas this antenna mount is 1 1/2 inches in diameter. I bought a 3/4 pipe nipple 10 inches long to mount to  the bottom of the antenna and mounted the antenna to the pipe on this winegard ds2000 mount using hose clamps that would go around the pipe from the antenna and this antenna mount.
I purchase this mount to use with Winegard MS-2000 omnidirectional antenna (w/cable). The mount fit the base of the antenna perfectly and easily allowed my to adjust the horizontal position of the antenna perfectly flat on top. It was installed onto a 4 foot piece if pressure treat 2 X 8 and lag screws attach it to the roof (silicone applied to the lag screws and bottom side of the board. )It took less than 15 minutes to complete the installation of the mount and antenna.
Bracket is sturdy. I'm upset that amazon recommended this with the directional antenna. The antenna post receptor is nowhere near large enough to fit this mount. You've got to buy another narrow diameter pole ot fit the antenna, then figure out how to mount that to the universal mount. Just beware of what package the Amazon website automatically proposes. I now have a mount I don't need.
Just what I needed to mount my new Digital Antenna!!! I had to buy separate lag screws as the only thing provided to secure this mount was U-Bolts. The instructions state to secure the mount to another pole via U-Bolts thru the flat bracket. ?? ?I thought the U-bolts were extra to secure the antenna to it. Oh well. At least in my situation, the flat bracket needs to be secured to a flat surface [wall or post] with lag screws.
Mounted in attic with end perpendicular to base. Seems like it should come with screws for just mounting to flat surface, the U-bolts would only work for mounting to another pole. Outer pipe diameter should be advertised, was too large for AntennaCraft HB22 u-bolt mounts, I had to buy a foot of PVC pipe to jam into the end, that actually worked well but was a bit annoying.
It was fine except it didn't have a connection to fit into the antenna. We had a pole that adapted and attached the antenna to the mount
This mount did the job, but I had to do some macgyver work on it, because the pre-amp mount was to narrow to mount on the mast. Other than that, it works good.
You need this, only if you don't have a pole already, or to mount your antenna anywhere. If flush to a wall the antenna sits straight, or flat if you will.
This was not the item I ordered. I received a pipe mount antenna mount instead of a roof mount (flat foot). It seemed well made and the material was quite heavy duty.
Answer: I do not believe 4" surface would be sufficient