can anyone tell me what the cubic feet is to this box?

38 1/4" Width, 12 1/2" Height, 15 1/2" TD, 12 1/2" BD

 

You really cant do that basic geometry?

 

i havent been in school in 5 years you expect me to remember stuff that i'll never need ?

 

Never need, but you need it now??

 

so the box isn't square i take it?

break it down into a square(or rectangle) (also known as a prism) and a right triangle

volume of prism = width X height X depth
volume of triangular section = 1/2 X base X height X depth

then volume of box = volume Z + volume A

 

Its 1 am and this is the first time I've been in this forum..

So take this Fuzzy math at your own risk but here you go. its the best I can do after a long day

 

go to the12volt.com and use the volume calculator it does the take out for wood and gives you internal air space

 

im pretty sure you could have googled "cubic feet" and found the formula also

 

if you are using 3/4 mdf your internal air space is 3.24 cubes

 

Yep. My dimension was the outside dimension . with a box that size I would use no less than 3/4"