The **Q Power HD115** 15" Single Heavy Duty Vented Square Subwoofer Enclosure Box is made with a 1" MDF material with charcoal carpet covering, a vented design, and terminal cup connectors. Other features include 2.7 cu. ft., square holes and gold post terminal. Turn your ride into a sound machine with the help of the Q Power 15" Single Heavy Duty Vented Square Subwoofer Enclosure. Purchase the **Q Power HD115"** with VMInnovations! If you want the most output for your money, this is the way to go. Q Power provides top quality speaker boxes and accessories, and the Q Power HD115 is no exception!