I have these DIY 2 subwoofer mdf carpeted boxes. One is ready (pre-cut, transparent window and ported and 2 pairs of binding posts/terminals) and set up to take 2 12-inch woofers. Dimensions are 29 1/4 x 16 3/4 x 13 1/4 inches. Asking price $100. The other is a completed cabinet with binding posts/terminals and double ports and user's choice to use the size of woofer and cut accordingly. Dimensions are 38 1/4 x 17 1/4 x 15 1/4 inches. Asking price $60.