Check the listing for details. 94-04 Mustang Convertible Custom Sub Box Subwoofer Enclosure & Amp Rack. Condition: New. Listed at 299.95 USD. Plexiglass Amp Rack: The plexiglass window will be cut to the dimensions of the specific amp you are installing. Amps over 18" Long WILL NOT FIT. I will need either the dimensions or model of your amp after you have placed your order. - Default amp rack window dimension - 13" x 9" (adjustable by request) Enclosure Specs: - 3/4" and 1/2" MDF Construction - Charcoal automotive carpet (black carpet is available upon request) - Holds 2 round 12" subwoofers (10" subs may be substituted upon request) - .95 cubic feet per chamber - 8" mounting depth - Round spring loaded speaker terminals - Sealed air tight w/liquid nails caulk Subwoofer Availability: 2 12" subs 2 10" subs 2 8" subs We can also cut square holes upon request.