Product Packaging:Standard Packaging Fits under rear bench seat - T goes towards the cab wall. Removal of seat is required during installation. Tight fit, speaker grills are recommended for additional protection between seat and woofer. Add gasket for up to xBC; additional mounting depth -Shallow Mounts only. Bar Grills are included for added protection at no additional charge. Note: Fits Colorado basic Work Truck and premium LT trim (available in LT1, LT2 and LT3) and Canyon Work Truck, SLE and SLT trim levels.