R/T 300 Enclosure Series 328-15 Kicker - Dual 15-Inch Slot Vented Sub Bass Hatchback Speaker Box with Labyrinth Power Port for Kicker Subs Made in the USA with premium 3/4" MDF 3.2 Cu. ft Air Space Per Chamber/Tuning - 32 Hz Easy Hook Up Terminal Cups Automotive Grey Carpeting 42.0" W x 17.5" H x 19.5" D