Do you mean SQ 10"? What is your question? This box is pretty simple to make. They give you all of the dimensions. Use 3/4" MDF(multi-density fiberboard) to build it. You can get this at Home depot. Pre-drill all holes or the wood will split. Seal box with a non-toxic, non-hardening sealant. I use clear caulk. Be careful as to which kind you use, the fumes from the caulk can eat through your speakers. This type of box is a little more difficult to make than a regular round ported box. This box is referred to as a Slot ported enclosure. Let me know if you have any further questions.