Brothers new universal speaker system is designed and manufactured specifically for under seat installations. Compact ABS unit with one 5 1/2 inch woofer and two piezo tweeters in each enclosure. Under seat fit for most pre '78 cars and trucks. 120 watt capability! If you've got the space we have the solution! Each enclosure measures 2 7/8 inches high x 8 inches wide x 11 inches long. Sold in pairs.