Polk Audio TC615i Rectangular 2-Way 6.5-Inch In-Wall Loudspeaker (Single, White) Single rectangular 2-way in-wall loudspeaker for custom installed sound systems Equipped with one 6.5-inch dynamic balance polymer composite driver with rubber surrounds Frequency response: 32Hz-20kHz Equipped with an aimable 0.75-inch silk dome tweeter with neodymium magnet Durable, moisture-resistant materials for safe use in kitchen, bath and sauna