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| Performance |
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| Data |
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| Super Q II |
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| Size 21 |
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Fan Size 21” |
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| Pressure Class Limits |
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| Minimum Fan RPM (Without VFRB Option) | ||||||||||||||||
Wheel Dia. | 21.5 inches |
| 546 mm |
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| Maximum RPM |
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Inlet Area | 3.31 square feet | 0.308 m2 |
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| 2070 |
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| 1800 RPM |
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Outlet Area | 2.88 square feet | 0.268 m2 |
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| II |
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| 2780 |
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| 1200 RPM |
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Tip Speed | 5.63 x RPM |
| 1.716 |
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| III |
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| 3740 |
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Table |
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CFM | Out- |
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| Total Static Pressure |
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Std. | let | 1/4” | 3/8” | 1/2” |
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| 1 1/4” |
| 1 1/2” | 1 3/4” | 2” | ||||||||||||
Air | Vel. | RPM | BHP | RPM BHP | RPM | BHP |
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2600 | 902 | 810 | 0.20 | 859 | 0.25 | 908 | 0.31 | 957 | 0.38 | 1001 | 0.44 | 1096 | 0.58 | 1197 | 0.74 |
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2800 | 972 | 859 | 0.23 | 903 | 0.29 | 949 | 0.35 | 995 | 0.42 | 1039 | 0.48 | 1121 | 0.62 | 1214 | 0.79 | 1308 | 0.96 |
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3000 | 1041 | 909 | 0.26 | 949 | 0.33 | 991 | 0.39 | 1034 | 0.46 | 1077 | 0.53 | 1155 | 0.67 | 1236 | 0.83 | 1323 | 1.02 | 1411 | 1.20 |
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3200 | 1111 | 959 | 0.30 | 996 | 0.37 | 1035 | 0.44 | 1075 | 0.51 | 1116 | 0.58 | 1194 | 0.74 | 1265 | 0.89 | 1344 | 1.07 | 1426 | 1.27 | 1507 | 1.46 |
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3400 | 1180 | 1011 | 0.35 | 1045 | 0.41 | 1081 | 0.48 | 1118 | 0.56 | 1156 | 0.64 | 1231 | 0.80 | 1302 | 0.96 | 1369 | 1.13 | 1445 | 1.34 | 1523 | 1.53 |
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3600 | 1250 | 1062 | 0.40 | 1094 | 0.47 | 1128 | 0.54 | 1163 | 0.61 | 1198 | 0.70 | 1270 | 0.86 | 1339 | 1.04 | 1401 | 1.21 | 1469 | 1.40 | 1541 | 1.62 |
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3800 | 1319 | 1115 | 0.45 | 1145 | 0.52 | 1176 | 0.60 | 1208 | 0.68 | 1242 | 0.76 | 1309 | 0.93 | 1376 | 1.11 | 1440 | 1.30 | 1499 | 1.48 | 1564 | 1.69 |
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4000 | 1388 | 1167 | 0.51 | 1196 | 0.59 | 1225 | 0.66 | 1255 | 0.74 | 1286 | 0.83 | 1350 | 1.01 | 1415 | 1.20 | 1477 | 1.39 | 1537 | 1.58 | 1592 | 1.78 |
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4200 | 1458 | 1220 | 0.58 | 1247 | 0.65 | 1274 | 0.73 | 1303 | 0.82 | 1332 | 0.90 | 1393 | 1.09 | 1454 | 1.28 | 1515 | 1.48 | 1573 | 1.68 | 1626 | 1.88 |
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4400 | 1527 | 1273 | 0.65 | 1299 | 0.73 | 1325 | 0.81 | 1352 | 0.90 | 1379 | 0.99 | 1436 | 1.17 | 1495 | 1.37 | 1553 | 1.58 | 1610 | 1.79 | 1665 | 2.01 |
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4600 | 1597 | 1327 | 0.73 | 1351 | 0.81 | 1376 | 0.89 | 1401 | 0.98 | 1427 | 1.07 | 1481 | 1.27 | 1536 | 1.47 | 1593 | 1.69 | 1648 | 1.91 | 1702 | 2.12 |
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4800 | 1666 | 1380 | 0.81 | 1403 | 0.90 | 1427 | 0.98 | 1451 | 1.07 | 1476 | 1.17 | 1527 | 1.37 | 1580 | 1.58 | 1633 | 1.80 | 1687 | 2.02 | 1739 | 2.25 |
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5000 | 1736 | 1434 | 0.90 | 1456 | 0.99 | 1479 | 1.08 | 1502 | 1.17 | 1525 | 1.27 | 1573 | 1.47 | 1624 | 1.69 | 1675 | 1.91 | 1727 | 2.15 | 1778 | 2.38 |
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5200 | 1805 | 1488 | 1.00 | 1509 | 1.09 | 1531 | 1.18 | 1553 | 1.28 | 1575 | 1.38 | 1621 | 1.59 | 1669 | 1.80 | 1718 | 2.03 | 1767 | 2.27 | 1817 | 2.52 |
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5400 | 1875 | 1542 | 1.11 | 1562 | 1.20 | 1583 | 1.30 | 1604 | 1.39 | 1625 | 1.50 | 1669 | 1.71 | 1715 | 1.93 | 1762 | 2.16 | 1809 | 2.41 | 1857 | 2.66 |
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5600 | 1944 | 1596 | 1.22 | 1616 | 1.32 | 1636 | 1.41 | 1656 | 1.52 | 1676 | 1.62 | 1718 | 1.84 | 1761 | 2.06 | 1806 | 2.30 | 1852 | 2.55 | 1898 | 2.81 |
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5800 | 2013 | 1651 | 1.34 | 1669 | 1.44 | 1688 | 1.54 | 1708 | 1.65 | 1727 | 1.75 | 1768 | 1.97 | 1809 | 2.21 | 1852 | 2.45 | 1895 | 2.70 | 1940 | 296 |
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6000 | 2083 | 1705 | 1.47 | 1723 | 1.57 | 1741 | 1.68 | 1760 | 1.78 | 1779 | 1.89 | 1817 | 2.12 | 1857 | 2.36 | 1898 | 2.60 | 1940 | 2.86 | 1982 | 3.13 |
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6200 | 2152 | 1759 | 1.61 | 1777 | 1.71 | 1795 | 1.82 | 1813 | 1.93 | 1831 | 2.04 | 1868 | 2.27 | 1906 | 2.52 | 1945 | 2.77 | 1986 | 3.03 | 2026 | 3.30 |
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6400 | 2222 | 1814 | 1.76 | 1831 | 1.86 | 1848 | 1.97 | 1865 | 2.09 | 1883 | 2.20 | 1919 | 2.44 | 1955 | 2.68 | 1993 | 2.94 | 2031 | 3.21 | 2071 | 3.48 |
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6600 | 2291 | 1869 | 1.91 | 1885 | 2.02 | 1902 | 2.14 | 1918 | 2.25 | 1935 | 2.37 | 1970 | 2.61 | 2005 | 2.86 | 2041 | 3.12 | 2078 | 3.39 | 2116 | 3.67 |
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6800 | 2361 | 1923 | 2.08 | 1939 | 2.19 | 1955 | 2.31 | 1971 | 2.43 | 1988 | 2.55 | 2021 | 2.79 | 2055 | 3.05 |
| 2090 | 3.32 | 2125 | 3.59 | 2162 | 3.87 |
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7000 | 2430 | 1978 | 2.25 | 1993 | 2.37 | 2009 | 2.49 | 2025 | 2.61 | 2041 | 2.73 |
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| 2139 | 3.52 | 2173 | 3.80 | 2208 | 4.09 |
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7200 | 2500 | 2033 | 2.44 | 2048 | 2.56 | 2063 | 2.68 |
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| 2125 | 3.19 | 2156 | 3.45 | 2189 | 3.73 | 2222 | 4.01 | 2256 | 4.31 |
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CFM | Out- |
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Std. | let | 2 1/4” | 2 1/2” | 3” |
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| 4 1/2” |
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| 5 1/2” | 6” |
| 6 1/2” | ||||||||
Air | Vel. | RPM | BHP | RPM BHP | RPM | BHP |
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3600 | 1250 | 1615 | 1.83 | 1687 | 2.06 |
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3800 | 1319 | 1633 | 1.92 | 1703 | 2.14 |
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4000 | 1388 | 1656 | 2.01 | 1721 | 2.25 | 1852 | 2.73 |
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4200 | 1458 | 1682 | 2.10 | 1743 | 2.35 | 1868 | 2.85 |
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4400 | 1527 | 1715 | 2.21 | 1769 | 2.44 | 1887 | 2.97 | 2007 | 3.49 |
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4600 | 1597 | 1754 | 2.35 | 1801 | 2.56 | 1910 | 3.08 | 2023 | 3.64 | 2137 | 4.19 |
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4800 | 1666 | 1791 | 2.48 | 1840 | 2.72 | 1935 | 3.19 | 2043 | 3.77 | 2153 | 4.33 |
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5000 | 1736 | 1828 | 2.62 | 1877 | 2.86 | 1966 | 3.34 | 2067 | 3.91 | 2170 | 4.51 |
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5200 | 1805 | 1866 | 2.77 | 1914 | 3.01 | 2001 | 3.50 |
| 2092 | 4.04 | 2192 | 4.66 |
| 2292 | 5.29 | 2394 | 5.90 |
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5400 | 1875 | 1904 | 2.92 | 1951 | 3.17 | 2042 | 3.69 |
| 2124 | 4.20 | 2215 | 4.80 |
| 2312 | 5.46 | 2410 | 6.09 |
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5600 | 1944 | 1944 | 3.07 | 1989 | 3.34 | 2078 | 3.87 |
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| 2335 | 5.63 | 2428 | 6.31 |
| 2522 | 6.96 | 2615 | 7.66 |
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5800 | 2013 | 1984 | 3.23 | 2029 | 3.51 | 2116 | 4.06 |
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| 2359 | 5.79 | 2449 | 6.50 |
| 2539 | 7.20 | 2631 | 7.87 | 2720 | 8.61 |
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6000 | 2083 | 2026 | 3.40 | 2069 | 3.68 | 2153 | 4.26 |
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| 2388 | 5.99 | 2471 | 6.66 |
| 2559 | 7.41 | 2646 | 8.14 | 2735 | 8.83 |
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6200 | 2152 | 2067 | 3.58 | 2109 | 3.87 | 2192 | 4.46 |
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| 2421 | 6.22 | 2499 | 6.88 |
| 2582 | 7.62 | 2666 | 8.37 | 2751 | 9.12 |
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6400 | 2222 | 2111 | 3.77 | 2151 | 4.06 | 2231 | 4.66 |
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| 2461 | 6.51 | 2529 | 7.11 |
| 2606 | 7.81 | 2688 | 8.60 | 2769 | 9.37 |
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6600 | 2291 | 2154 | 3.96 | 2193 | 4.26 | 2272 | 4.87 |
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| 2498 | 6.77 | 2563 | 7.37 |
| 2635 | 8.05 | 2710 | 8.79 | 2791 | 9.62 |
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6800 | 2361 | 2199 | 4.17 | 2236 | 4.47 | 2312 | 5.09 |
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| 2535 | 7.03 | 2604 | 7.70 |
| 2667 | 8.33 | 2738 | 9.05 | 2815 | 9.87 |
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7000 | 2430 | 2244 | 4.38 | 2281 | 4.69 | 2354 | 5.32 |
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| 2572 | 7.31 | 2641 | 7.99 |
| 2702 | 8.62 | 2769 | 9.33 | 2839 | 10.09 |
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7200 | 2500 | 2290 | 4.61 | 2325 | 4.92 | 2396 | 5.56 |
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| 2609 | 7.59 | 2678 | 8.29 |
| 2744 | 8.99 | 2803 | 9.64 | 2869 | 10.39 |
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7400 | 2569 | 2336 | 4.85 | 2371 | 5.16 | 2439 | 5.81 |
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| 2647 | 7.90 | 2715 | 8.59 |
| 2780 | 9.31 | 2844 | 10.04 | 2901 | 10.71 |
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7600 | 2638 | 2384 | 5.09 | 2416 | 5.41 | 2483 | 6.07 |
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| 2686 | 8.20 | 2752 | 8.90 |
| 2817 | 9.64 | 2880 | 10.38 | 2936 | 11.06 |
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7800 | 2708 | 2431 | 5.35 | 2463 | 5.67 | 2528 | 6.34 |
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| 2725 | 8.50 | 2790 | 9.25 |
| 2855 | 9.98 | 2917 | 10.74 | 2978 | 11.50 |
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8000 | 2777 | 2479 | 5.62 | 2510 | 5.95 | 2573 | 6.63 |
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| 2636 | 7.33 | 2701 | 8.06 |
| 2765 | 8.82 | 2829 | 9.58 |
| 2892 | 10.32 | 2954 | 11.10 | 3014 | 11.88 |
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8200 | 2847 | 2528 | 5.90 | 2558 | 6.24 | 2619 | 6.92 |
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| 2680 | 7.64 | 2742 | 8.38 |
| 2806 | 9.14 | 2868 | 9.92 |
| 2930 | 10.71 | 2991 | 11.47 | 3051 | 12.26 |
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Std. | let | 7” |
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Air | Vel. | RPM | BHP | RPM BHP | RPM | BHP |
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6000 | 2083 | 2821 | 9.60 |
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6200 | 2152 | 2836 | 9.84 | 2919 | 10.64 |
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6400 | 2222 | 2851 | 10.15 | 2934 | 10.89 | 3015 | 11.71 |
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6600 | 2291 | 2870 | 10.42 | 2951 | 11.16 | 3030 | 11.98 |
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6800 | 2361 | 2891 | 10.68 | 2967 | 11.51 | 3046 | 12.27 |
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7000 | 2430 | 2914 | 10.95 | 2988 | 11.79 | 3063 | 12.64 |
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7200 | 2500 | 2937 | 11.18 | 3011 | 12.08 | 3083 | 12.95 |
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7400 | 2569 | 2966 | 11.49 | 3033 | 12.32 | 3105 | 13.25 |
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7600 | 2638 | 2997 | 11.83 | 3061 | 12.64 | 3127 | 13.50 |
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7800 | 2708 | 3031 | 12.19 | 3092 | 12.99 | 3154 | 13.84 |
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8000 | 2777 | 3073 | 12.66 | 3125 | 13.37 | 3184 | 14.21 |
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8200 | 2847 | 3110 | 13.07 | 3160 | 13.78 | 3217 | 14.60 |
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8400 | 2916 | 3146 | 13.48 | 3203 | 14.30 |
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8600 | 2986 | 3183 | 13.90 | 3239 | 14.74 |
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8800 | 3055 | 3220 | 14.32 |
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9000 | 3125 | 3258 | 14.76 |
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Performance based on 0.075 lbs. per cubic foot density (air at 70 F and 29.92 Hg Bar). Performance shown is for installationType B: free inlet, ducted outlet. |
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Power rating (BHP) does not include drive losses. Performance ratings do not include the effects of appurtenances in the airstream. |
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When inlet vanes are used increase rpm 1 percent and brake horsepower 3 percent. | 26 |
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Fan tables cover part of fan operating range; fan curves show full operating range. |
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