It depends on how hard the wind blows. Hard wind can tear your canopy to pieces.
Yes, it goes all the way through
Used this because it had a hole. Did not fill it.
Angelus does manufacture a 12" w x 8" h x 12" d column block. We do not make 12x12x12. If Van Nuys HD does not have it, they can order it on special order via the Pro Desk. Or you can try Panorama City or Canoga Park HD, they may have it.
There are 144 pcs in a pallet.
Yes, it works for me!
18 lbs for 8x8x8
This has been answered several times. Look at the Q & A section for a previous question: "What is the inside measurements of the Angelus block 8x8x8 concrete block?" by Wayne on 4/23/18. You'll see my detailed answer with a picture of the block. The short answer is approximately 4 1/2".
What I did... I bought the plastic bed risers and then filled those with cement so they would be stronger, would not crack. I have used them for years. Works great!