Brothers new universal speaker system is designed and manufactured specifically for under seat installations. Compact ABS unit with one 8-inch woofer and two piezo tweeters in each enclosure. The 8-inch woofer has a 200 watt capacity. If you've got the space we have the solution! the 8-inch woofer enclosure measures 11-inches wide x 12.5-inches deep x 3-inches high. Sold in pairs.