Anyone know where you can get a piece of at least 1/2" plexiglas. definately not lowes,home depot or any other building supply place around here.Nearly all the ones on the web seem to be corporate, industrial sites from any searches i do.I would think it would be abundant given its popularity in the car audio world.any assistance would be appreciated. i'm only looking for maybe about 34" x 15" piece. also, is it possible {or a good idea} to mount a sub to a plexi baffle