Filter Filters 12" Subwoofer Boxes Remove All Filters Price $50-$100 (1) $100-$500 (1) Condition New (2) Receiver Size Yes 10-7-2015 (2) Car Audio Single 12" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure $84.95 (1) Car Audio Dual 12" SPL Bass Subwoofer Labyrinth Vent Sub Box Stereo Enclosure $129.95 (1)