GS-JGMP28B black 8" dual ported sub box, fits 07-18 gmc sierra extended cab

SPECIFICATIONS:

-CUTOUT DIAMETER: 7 1/8"

-AIR VOLUME: 1.25 FT^3

-TUNING FREQUENCY: 36-Hz

-1 SLOT PORT (DIMENSIONS: H-1.5” W-5” L-9”)

-WEIGHT: 37 LBS.

-MOUNTING DEPTH: 6 1/2"

DIMENSIONS:

-FRONT HEIGHT: 9 1/4"

-REAR HEIGHT: 7 1/4”

-LENGTH: 55 1/2"

-DEPTH: 13 1/2"

CONSTRUCTION:

-5/8" HIGH QUALITY MDF WOOD

-CARPETED WITH DURABLE TRUNK LINER FINISH

-SEALED WITH HIGH QUALITY TITEBOND SILICONE

-GLUED WITH HIGH QUALITY TITEBOND WOOD GLUE

-2 BINDING POST TERMINALS

INSTALLATION:

-FITS UNDER REAR SEAT BEHIND THE DRIVER'S SIDE

-DOWN FIRING

-WILL NOT FIT 2007 CLASSIC