"* Empty box for mounting a 12-in Woofer with a maximum depth of 4.25-inches past surface. * Designed for downfiring applications this to provide woofer protection as well as superb bass response * 11-in diameter hole for mounting 12-in woofer * Quick release push type wire terminals * Heavy duty carpet with quality embroidered stitched logo * High density MDF for best bass response 15mm * 4.25-in available speaker depth past mounting surface * Dimensions: 20.75-in x 14-in x 6.5-in high * 1.38-in depth past surface to floor clearance"