... , 400L, 500LTechnical data:total length (m)1,65/2,00/ 2,45Total Width (m)1.9Gross Absorb Area (m²)3,14/3,80 / 4,66Appeture Area ... (m²)2,52/3,36 / 4,20Surface ... -15Efficiency (n0 in %, k1 in W/m²K, k2in W/m²/K²) ;n0= 0.77, k1 = 1.47, k2= 0.0051hail resistance=<25diameter ...