The Tan colour was discontinued 2 years ago. Check with your local store for any remaining inventory. They will also be able to look this up by region. This product is also available in Grey/Charcoal and Beige/Black.
No, the angles on the sides of the blocks are pretty wide. You could make 90° work but touching the interior corners, but the gap between the front faces will be undesirable.
No these can be purchased at a lower quantity if they are sold at a HD close to your home. If not, then they ship by the pallet.
Yes. These bricks will hold up to the heat and make for a nice-looking pit.
...two bricks (alternated) will equal approx 15" on each side...however, the fact they slant on each end, the 15" will not be directly across from each other...i hope that explains it properly
...while i personally have found nothing totally "weed proof", my best option was a heavy duty weed blocker...for keeping them level, i dug a small trench as wide as the blocks, laid my weed block fabric in (going up the sides also), filled with sand, wet and compacted it, then laid my blocks...may sound like a lot of work to some!
I think you could, the ring they'd make naturally though would be quite tight. I'd personally go for a bigger block to get a larger fire pit. These seem to me to be mostly for garden edging (that's what I used them for at least).
If you use 15 blocks (based on the provided picture), the inside perimeter is 15 X 8 = 120", with a diameter of 120 / 3.14 = 38.2". Each block is 4" deep, so the outside circle would have a diameter of 38.2 + 8 = 46.2" and a perimeter of 145.1". Outside distance between each block then must be 145.1 / 15 = 1.67". Calculating for the wedge angle (vertex angle of an isosceles triangle with dimensions of 4, 4, and 1.67): 24.1 degrees.
Pronably about 80
8-10 lbs ea. Full pallet would be between 1.5 - 2 tons