A die (for a continuous casting installation) that includes a movably mounted frame having a first subframe and a second subframe; a first broad-side insert which is positioned on the first subframe; and a second broad-side insert which is positioned on the second subframe. Narrow sides each having a narrow-side copper plate and abuting the two broad-side inserts are positioned between the two broad-side inserts. The die also has: a clamping device which is designed to exert, on the subframes, a clamping force that acts between the subframes; and an oscillation drive which is designed to make the frame oscillate in and counter to a horizontal width direction (H) relative to the narrow sides. A spring band assembly which guides the subframes is positioned on each subframe on sides which are opposite one another in the width direction (H).