BLACK 8" DUAL SEALED SUB BOX, FITS CHEVY COLORADO CREW-CAB 2015-2023 SPECIFICATIONS: -CUTOUT DIAMETER: 7 1/8" -TOTAL AIR VOLUME: 0.96 Ft3 -2 INDIVIDUAL CHAMBERS -VOLUME PER SUBWOOFER: 0.48 Ft3 -WEIGHT: 27 LBS. -MOUNTING DEPTH: 4" DIMENSIONS: -HEIGHT: 7 1/4” -LENGTH: 42 1/4" -DEPTH: 14 1/2" CONSTRUCTION: -5/8" MDF WOOD -GLUE -STAPLES + MAINLY SEALED WITH HIGH QUALITY SILICONE + INSTALLATION: -FITS UNDER REAR SEAT -DOWN FIRING -REMOVAL OF PLASTIC COVER & SUPPORT BAR IS REQUIRED -SHALLOW MOUNT SUBWOOFERS ONLY -SUBWOOFERS WITH WIDE BASKETS OR MAGNETS MAY NOT FIT BLACK 10" DUAL SEALED SUB BOX, FITS CHEVY COLORADO CREW-CAB 2015-2023 SPECIFICATIONS: -CUTOUT DIAMETER: 9 1/4" -TOTAL AIR VOLUME: 0.96 Ft3 -2 INDIVIDUAL CHAMBERS -VOLUME PER SUBWOOFER: 0.48 Ft3 -WEIGHT: 27 LBS. -MOUNTING DEPTH: 4" DIMENSIONS: -HEIGHT: 7 1/4” -LENGTH: 42 1/4" -DEPTH: 14 1/2" CONSTRUCTION: -5/8" MDF WOOD -GLUE -STAPLES + MAINLY SEALED WITH HIGH QUALITY SILICONE + INSTALLATION: -FITS UNDER REAR SEAT -DOWN FIRING -REMOVAL OF PLASTIC COVER & SUPPORT BAR IS REQUIRED -SHALLOW MOUNT SUBWOOFERS ONLY -SUBWOOFERS WITH WIDE BASKETS OR MAGNETS MAY NOT FIT 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