15" L7 box design needed

[footeyo86]

If someone could tell me the dimensions and list the cut out sheet of all the pieces I would need for the best box for this sub, it would be greatly appreciated.

How important is it to have a tuned box?

I listen to a lot of rap, i found an enclosure tuned at 48hz is that good?

I want to put a box together myself but want it made just for this sub

[footeyo86]

I also have 2 10" L7s that are in a slot vented box. to me the slot just acts like a big hole in the middle of the box. Doesn't sound as good as it could to me. Would a tuned box help?