Atrend 10LSV 10-Inch Single Vented Subwoofer Enclosure MDF Construction with .75" Speaker Face Miter & Dado Construction with Premium Carpeted Finish Slot Vent with Spring loaded extra large terminal cups Gross Cu. Ft. 2.25 Net Cu. Ft.1.85 (Tuning 43Hz) Speaker hole cutout 9.12" (W) 27.00" x (H) 12.75" x (D) 15.00" - Vent (W) 2.75" x (H) 11.25" x (Deep) 17.75"