A: Installed, mine is about 42 1/2" tall. The Weatherables sleeve is 45". Depending on your hardware, the blocks can be mounted higher than 42". This is also available in a 36" post.
A: The Blue part of this mount is a 2" square. The item is intended to work with a weatherables 4 inch post sleeve over the top of it.
A: Driver - This item is available through the special order program at your local store's Pro-Desk. Call us at 855-224-9761 and we can help you with a materials list to acquire a quote through the store of your choice. Also you can send over a layout to email@example.com if easier.
A: Jb - This depends on what gate you are attaching. If you are attaching a Weatherables Railing gate this will work fine.
A: The vinyl blocks are quite sturdy as is the whole post assembly. The blocks are adjusted to the height required for hardware position. You screw your hardware through the sleeve into the blocks. I used mine on the receiver side of the gate. That worked quite well.