30English ...InstallationB=>Vertical distance between lenscenter and screen centerC=> Throw distanceD=> Vertical distance between lenscenter and bottom of screen (top ofscreen for ceiling mount)α=> Throw angle(W)(H)(B)(D)(C)Screen DiagonalLens CenterScreen CenterThrow Angle (α)Screen Size (B) (C) (D) (α)Diagonal Width (W) Height (H)inch mm inch mm inch mm inch mm inch mm inch mm degree77 1956 65 1659 41 1037 31 777 6 148 10 259 55.380 2032 68 1723 42 1077 32 808 7 169 11 269 55.385 2159 72 1831 45 1144 34 858 8 205 11 286 55.387.2 2215 74 1878 46 1174 35 880 9 220 12 293 55.390 2286 76 1939 48 1212 36 909 9 240 12 303 55.395 2413 81 2046 50 1279 38 959 11 276 13 320 55.3100 2540 85 2154 53 1346 40 1010 12 311 13 337 55.3U310W/U260WThis graph is for user’s reference only.Throw Distance and Screen SizeScreen Size (B) (C) (D) (α)Diagonal Width (W) Height (H)inch mm inch mm inch mm inch mm inch mm inch mm degree63 1600 50 1280 38 960 29 749 5 130 11 269 55.365 1651 52 1321 39 991 30 773 6 146 11 277 55.370 1778 56 1422 42 1067 33 832 7 188 12 299 55.375 1905 60 1524 45 1143 35 892 9 230 13 320 55.377 1956 62 1565 46 1173 36 915 10 247 13 329 55.380 2032 64 1626 48 1219 37 951 11 272 13 341 55.385 2159 68 1727 51 1295 40 1010 12 314 14 363 55.3U300X/U250X