Building a Fibberglass speaker box

I am getting ready to start building my glassed boxes this week. Do you guys use fiberglass mat or a fabric.

What are the prose and cons of using either one.

ThanksFrameLayN88

depends on application. What exactly are you doing

fleece

I am building 2 center boxes. I am just not sure what I should use. Like Mark said I am trying to figure out which to use. Mat or Fleece.

Thanks

FrameLayN88

How many suports should I use in them.

I was going to use the sub mounting ring, 4 woodend braces on the inside of the back with like a backing plate or something.

Also with glass boxes should it be ported.

I am using Eclpise Titanium's

Thanks Again
FrameLayN88