R/T 800 Enclosure Series (838-12) - Dual 12" Slot Vented Sub Bass Hatchback Speaker Box with Labyrinth Power Port (Separate Chambers) Dimensions: 34.25" W x 14.25" H x 18.38" D Air Volume: 1.86cf per chamber Tuning: 36Hz Mounting depth: 11 7/8" Made in the USA - 3/4" MDF