Obcon Single 12" Slot Vented Pro Built FREAK Series FOR JL AUDIO W7 SUBS ONLY 16.5" H x 20.5" W x 19.5" D Labyrinth slot vent design with 2.20 Cu Ft Air Space 3/4" Plexiglas 1" MDF with brushed aluminum side panels THIS BOX IS FOR JL AUDIO W7 SUBS ONLY...10.5" HOLE CUTOUT