LEAF PLANAR AS40 It has been manufactured since 1985, when we started our business. It is almost a fullrange, responding from 200 Hz to 20 KHz (depending on the diaphragm used). It is a great choice due to its high fidelity to the original sound and simplicity of assembling of speakers, requiring just a cutting with attenuation of 6 dB/8°. Highly recommended and broadly advertised. Many if these panels have been working for more than 15 years without presenting any problems. Measures: height: 630 mm X width.105 mm X deepness.18 mm Please, contact us for other measures.