Atrend 8SQV 8” Single Vented Subwoofer/Speaker Enclosure Subwoofer Box Designed to Let The Music Move You. High Grade MDF Construction with Nickel Finish Speaker Terminal - Walmart.com
Amazon.com: Car Audio Dual 10" Vented Subwoofer Stereo Sub Box Ported Enclosure 5/8" MDF : Electronics