I have a ported box that i found in my shed but i dunno what cu. ft. is for it is there a way to determine it?

Question

Thanks

Answer 1

Take a tape measure.Measure the inside of the boxes height, width,depth and multiply the height times width times depth and divide it by 1728 it will give you the cubic feet. Make sure you measure the inside not the outside.

Answer 2

go to the12volt.com and they have a calculator there

Answer 3

Easy just measure length x width x height = cubic feet