I bought a 6x8 turned out to be too small, I ordered an add on to make it 8x12 for $100 more.
U mean 120...also 8x6 turns into 6x12...
Tubular Sukkah expansion kit:
This kit is for current owners of a 6x8, 8x8 or 8x12 Tubular Sukkah who would like some extra space. It will expand the 6x8 to 6x12, the 8x8 to 8x12 size, or the 8x12 to an 8x16