Internal airspace:  2.55 f^3 
hole cutout:          9.125"
mounting depth:    7"

Made from 3/4" MDF and a thick fiberglass laminate. Painted enclosures also come with black carpet to accent the paint, and gold plated speaker terminals. Easily installs from rear of car. Enclosure simply wedges inbetween the rear strut bar, and the piece behind the seats.