The **Q Power HD212** 12" Dual Heavy Duty Vented Square Subwoofer Enclosure Box is made with a 1" MDF material with charcoal carpet covering, a vented design, and two terminal cup connectors. Other features include 3.2 cu. ft., square holes and gold post terminal. Turn your ride into a sound machine with the help of the Q Power 12" Dual Heavy Duty Vented Square Subwoofer Enclosure. Q Power provides top quality speaker boxes and accessories, and the Q Power HD212 is no exception!.....