(OPEN BOX) FOX ACOUSTICS 2007-2023 GM EXT - DOUBLE CAB 2-10" VENTED SUBWOOFER BOXOPEN BOX Items are considered in NEW condition. These items may have been displays or customer returns. If applicable, Open Box items will carry standard manufacturer warranty unless otherwise stated. Open box items may or may not be packed in original packaging. GM XC 210 V 07 2007+ GM EXTRA CAB TRUCK 2 10" VENTED SUB BOX AIR VOLUME: 2. 1 CUBIC FEET DIVIDED: NO PORT VENT TUNE FREQUENCY: 36hz MOUNTING HOLE SIZE: 9. 125" MOUNTING DEPTH: 6" WITH A 7"