This bed is 6x16 with a 2' peak. Each side is 4' long from ground to peak making the plantable surface area to be 8x16 thus increasing the surface area due to the mounding of soil as opposed to the normal flat garden.
We have 6 - 4x4 beds (96 sqft). This 6x16 (96 sqft) which is actually closer to 8x16 due to the mounding effect is more like (128 sqft) - you can feel free to correct my math this is all estimation anyway. I can't wait to see how it performs over the next few seasons!