BLACK 10" DUAL SEALED SUB BOX, FITS SILVERADO EXTENDED-CAB 88-98 SPECIFICATIONS: -CUTOUT DIAMETER: 9 1/4" -TOTAL AIR VOLUME: 1.45 CUBIC FT. -2 INDIVIDUAL CHAMBERS -VOLUME PER SUBWOOFER: 0.73 CUBIC FT. -WEIGHT: 44 LBS. -MOUNTING DEPTH: 5 1/4" (WITH 5” MAGNET DIAMETER) DIMENSIONS: -HEIGHT: 11 3/4” -LENGTH: 57 1/4" -TOP DEPTH: 11" -BOTTOM DEPTH: 16 1/2" CONSTRUCTION: -5/8" MDF WOOD -GLUE -STAPLES + MAINLY SEALED WITH HIGH QUALITY SILICONE + INSTALLATION: -FITS UNDER REAR SEAT -FORWARD FIRING -REQUIRES REMOVAL FACTORY JACK KIT NOT ALL SUBS WILL FIT DUE TO THE CUTOUT DIAMETER OR MOUNTING DEPTH SO PLEASE CHECK THE DIMENSIONS TO MAKE SURE THIS BOX SUITS YOUR SUBS