Ultra durable MDF material and double glued seamed construction for long lasting performance.;Spring loaded, solid brass professional speaker cable terminal using pre-terminated soldered 16 AWG speaker cable for maximum power transfer.;Two tone durable charcoal/black colored UV treated carpet for best protection against sun fading.;Woofer mounting screws included.;0.75 cubic foot internal volume, 11.25 cutout for a 12 shallow mount subwoofer.