CHOSEN’S BDW Series fan is the belt driving backward centrifugal fan that is mainly applied in central air conditioning units, purified equipment, ventilation system or the other specialized equipment with the features of low noise, high effeciency, stable operation and flexible adjustment etc.
| Item | Power | Air Flow | Total Pressure | Static Pressure | Speed | Noise | Outlet Wind Speed | Efficiency Range Within Total Pressure |
| Kw | (m3/h) | (Pa) | (Pa) | RPM | dB(A) | （m/s） | % | |
| BDW280-X | 0.55 | 1966-3396 | 469-228 | 459-196 | 1830 | 80.7 | 4-7 | 58%-47% |
| 0.75 | 2181-3767 | 577-280 | 564-241 | 2030 | 83.0 | 4-8 | ||
| 1.1 | 2478-4280 | 745-362 | 729-312 | 2300 | 85.8 | 5-9 | ||
| 1.5 | 2747-4745 | 917-445 | 896-384 | 2550 | 88.0 | 5-10 | ||
| 2.2 | 3122-5392 | 1183-575 | 1157-495 | 2900 | 90.8 | 6-11 | ||
| 3 | 3512-6065 | 1497-727 | 1464-627 | 3260 | 93.3 | 7-12 | ||
| 4 | 3865-6675 | 1814-881 | 1773-759 | 3600 | 95.4 | 8-14 | ||
| BDW280-Y | 5.5 | 4298-7423 | 2243-1090 | 2193-939 | 4000 | 97.7 | 9-15 | |
| BDW315-X | 0.75 | 3468-5651 | 480-195 | 459-139 | 1700 | 78.4 | 5-9 | 74%-49% |
| 1.1 | 3940-6422 | 620-251 | 593-180 | 1930 | 81.2 | 6-10 | ||
| 1.5 | 4366-7120 | 762-309 | 729-221 | 2150 | 83.4 | 7-12 | ||
| 2.2 | 4963-8089 | 984-399 | 941-286 | 2440 | 86.2 | 8-13 | ||
| 3 | 5584-9101 | 1245-505 | 1191-361 | 2750 | 88.7 | 9-15 | ||
| 4 | 6146-10016 | 1508-612 | 1442-438 | 3020 | 90.8 | 10-17 | ||
| BDW315-Y | 5.5 | 6834-11137 | 1865-757 | 1783-542 | 3360 | 93.1 | 11-18 | |
| 7.5 | 7578-12350 | 2293-931 | 2193-666 | 3720 | 95.4 | 12-21 | ||
| BDW355-X | 1.1 | 4608-7521 | 529-214 | 506-152 | 1600 | 81.0 | 6-10 | 74%-49% |
| 1.5 | 5109-8338 | 651-264 | 622-187 | 1770 | 83.3 | 6-11 | ||
| 2.2 | 5806-9475 | 840-340 | 803-242 | 2010 | 86.0 | 7-12 | ||
| 3 | 6531-10658 | 1063-431 | 1016-306 | 2260 | 88.6 | 8-14 | ||
| 4 | 7187-11730 | 1287-522 | 1231-371 | 2500 | 90.7 | 9-15 | ||
| 5.5 | 7992-13043 | 1592-646 | 1522-459 | 2770 | 93.0 | 10-17 | ||
| BDW355-Y | 7.5 | 8863-14464 | 1958-794 | 1872-564 | 3070 | 95.2 | 11-19 | |
| 11 | 10069-16432 | 2528-1025 | 2416-728 | 3580 | 98.0 | 13-22 | ||
| BDW400-X | 1.1 | 5333-8334 | 464-237 | 444-188 | 1290 | 80.0 | 5-9 | 75%-60% |
| 1.5 | 5912-9240 | 570-292 | 546-232 | 1430 | 82.2 | 6-9 | ||
| 2.2 | 6717-10497 | 736-377 | 705-299 | 1620 | 85.0 | 7-11 | ||
| 3 | 7554-11805 | 932-477 | 892-379 | 1830 | 87.5 | 8-12 | ||
| 4 | 8313-12992 | 1129-577 | 1080-459 | 2010 | 89.6 | 8-14 | ||
| 5.5 | 9244-14447 | 1396-714 | 1336-568 | 2240 | 91.9 | 9-15 | ||
| BDW400-Y | 7.5 | 10249-16017 | 1717-878 | 1643-699 | 2480 | 94.2 | 11-17 | |
| 11 | 11643-18197 | 2216-1134 | 2121-902 | 2820 | 96.9 | 12-19 | ||
| BDW450-X | 1.5 | 6815-10742 | 495-251 | 475-200 | 1180 | 83.5 | 5-9 | 75%-60% |
| 2.2 | 7744-12206 | 639-324 | 613-258 | 1340 | 86.3 | 6-10 | ||
| 3 | 8711-13730 | 809-410 | 776-327 | 1500 | 88.8 | 7-11 | ||
| 4 | 9589-15114 | 980-497 | 940-396 | 1660 | 90.9 | 8-12 | ||
| 5.5 | 10665-16811 | 1212-615 | 1162-490 | 1850 | 93.2 | 9-14 | ||
| 7.5 | 11827-18642 | 1491-756 | 1429-602 | 2050 | 95.5 | 10-15 | ||
| BDW450-Y | 11 | 13440-21183 | 1925-976 | 1845-778 | 2320 | 98.2 | 11-18 | |
| 15 | 15128-23850 | 2438-1237 | 2337-985 | 2600 | 100.8 | 12-20 | ||
| BDW500-X | 2.2 | 9026-14259 | 555-282 | 532-225 | 1120 | 83.5 | 6-9 | 76%-61% |
| 3 | 10153-16039 | 702-357 | 674-285 | 1260 | 86.0 | 6-10 | ||
| 4 | 11173-17652 | 851-432 | 816-345 | 1400 | 88.1 | 7-12 | ||
| 5.5 | 12425-19629 | 1052-534 | 1009-427 | 1550 | 90.4 | 8-13 | ||
| 7.5 | 13778-21767 | 1294-657 | 1241-525 | 1720 | 92.6 | 9-14 | ||
| BDW500-Y | 11 | 15656-24734 | 1671-849 | 1602-678 | 1950 | 95.4 | 10-16 | |
| 15 | 17619-27835 | 2117-1075 | 2030-859 | 2200 | 98.0 | 12-18 | ||
| BDW500-Z | 18.5 | 18888-29840 | 2433-1236 | 2333-987 | 2350 | 99.5 | 12-20 | |
| 22 | 20021-31630 | 2733-1388 | 2621-1109 | 2500 | 100.8 | 13-21 | ||
| BDW560-X | 2.2 | 10629-16630 | 478-246 | 458-197 | 940 | 75.8 | 5-9 | 77%-62% |
| 3 | 11956-18706 | 605-311 | 579-249 | 1050 | 78.4 | 6-10 | ||
| 4 | 13158-20587 | 732-377 | 702-302 | 1160 | 80.5 | 7-11 | ||
| 5.5 | 14631-22892 | 906-466 | 868-373 | 1290 | 82.8 | 7-12 | ||
| 7.5 | 16225-25386 | 1114-573 | 1067-459 | 1430 | 85.0 | 8-13 | ||
| 11 | 18437-28846 | 1438-740 | 1378-592 | 1630 | 87.8 | 10-15 | ||
| BDW560-Y | 15 | 20749-32463 | 1822-937 | 1746-751 | 1830 | 90.4 | 11-17 | |
| 18.5 | 22243-34801 | 2094-1077 | 2006-862 | 1960 | 91.9 | 12-18 | ||
| 22 | 23572-36880 | 2352-1210 | 2253-969 | 2080 | 93.1 | 12-20 | ||
| BDW560-Z | 30 | 26139-40897 | 2892-1488 | 2771-1192 | 2300 | 95.4 | 14-22 | |
| 37 | 28041-43873 | 3328-1712 | 3188-1371 | 2470 | 96.9 | 15-23 | ||
| BDW630-X | 3 | 14461-22161 | 506-233 | 483-178 | 880 | 81.6 | 6-9 | 79%-55% |
| 4 | 15914-24389 | 613-282 | 585-215 | 970 | 83.7 | 6-10 | ||
| 5.5 | 17697-27120 | 759-349 | 724-266 | 1080 | 86.0 | 7-11 | ||
| 7.5 | 19629-30081 | 933-429 | 890-327 | 1200 | 88.3 | 8-13 | ||
| 11 | 22299-34174 | 1205-554 | 1149-423 | 1360 | 91.0 | 9-14 | ||
| BDW630-Y | 15 | 25101-38468 | 1526-702 | 1456-536 | 1530 | 93.6 | 10-16 | |
| 18.5 | 26902-41228 | 1754-807 | 1672-616 | 1640 | 95.1 | 11-17 | ||
| 22 | 28516-43701 | 1970-906 | 1879-692 | 1740 | 96.4 | 12-18 | ||
| BDW630-Z | 30 | 31622-48461 | 2423-1115 | 2310-851 | 1930 | 98.6 | 13-20 | |
| 37 | 33915-51975 | 2787-1282 | 2658-978 | 2070 | 100.1 | 14-22 | ||
| BDW710-X | 3 | 16947-25786 | 432-196 | 412-149 | 710 | 81.6 | 5-8 | 79%-54% |
| 4 | 18650-28379 | 523-238 | 499-180 | 780 | 83.7 | 6-9 | ||
| 5.5 | 20744-31564 | 647-294 | 617-223 | 870 | 86.0 | 7-10 | ||
| 7.5 | 23003-35002 | 796-362 | 759-275 | 970 | 88.3 | 7-12 | ||
| 11 | 26139-39774 | 1028-467 | 979-355 | 1100 | 91.0 | 9-13 | ||
| 15 | 29423-44771 | 1302-592 | 1241-449 | 1240 | 93.6 | 10-15 | ||
| 18.5 | 31542-47995 | 1496-680 | 1426-516 | 1330 | 95.1 | 10-16 | ||
| BDW710-Y | 22 | 33427-50675 | 1681-759 | 1601-576 | 1400 | 96.4 | 11-17 | |
| 30 | 37076-56415 | 2067-940 | 1969-713 | 1560 | 98.6 | 12-19 | ||
| BDW710-Z | 37 | 39764-60506 | 2378-1081 | 2265-821 | 1670 | 100.2 | 13-20 | |
| 45 | 42442-64580 | 2709-1232 | 2581-935 | 1780 | 101.6 | 14-22 | ||
| BDW800-Y | 4 | 21802-33197 | 448-203 | 426-154 | 640 | 81.0 | 5-9 | 79%-54% |
| 5.5 | 24243-36914 | 554-251 | 527-190 | 720 | 83.3 | 6-10 | ||
| 7.5 | 26884-40935 | 681-309 | 649-234 | 800 | 85.6 | 7-11 | ||
| 11 | 30542-46515 | 879-400 | 837-302 | 900 | 88.4 | 8-12 | ||
| 15 | 34379-52347 | 1114-506 | 1061-383 | 1020 | 90.9 | 9-14 | ||
| 18.5 | 36855-56117 | 1280-582 | 1219-440 | 1090 | 92.4 | 10-15 | ||
| 22 | 39057-59470 | 1438-654 | 1369-494 | 1150 | 93.7 | 10-16 | ||
| 30 | 43311-65947 | 1768-804 | 1684-608 | 1280 | 95.9 | 11-18 | ||
| BDW800-Z | 37 | 46451-70745 | 2035-925 | 1938-700 | 1380 | 97.5 | 12-19 | |
| 45 | 49579-75491 | 2317-1053 | 2207-797 | 1470 | 98.9 | 13-20 | ||
| BDW900-Y | 5.5 | 28300-43271 | 480-218 | 458-165 | 600 | 81.9 | 6-9 | 80%-55% |
| 7.5 | 31383-47984 | 591-269 | 563-203 | 660 | 84.1 | 6-10 | ||
| 11 | 35653-54512 | 763-347 | 727-263 | 750 | 86.9 | 7-11 | ||
| 15 | 40123-61347 | 966-440 | 921-333 | 850 | 89.5 | 8-13 | ||
| 18.5 | 43013-65765 | 1110-505 | 1058-383 | 900 | 91.0 | 9-14 | ||
| 22 | 45582-69694 | 1247-568 | 1188-430 | 960 | 92.2 | 9-15 | ||
| 30 | 50547-77285 | 1534-698 | 1462-529 | 1060 | 94.5 | 10-16 | ||
| 37 | 54225-82908 | 1765-803 | 1682-608 | 1140 | 96.0 | 11-18 | ||
| BDW900-Z | 45 | 57862-88695 | 2010-904 | 1915-681 | 1220 | 97.4 | 12-19 | |
| 55 | 61872-94601 | 2298-1046 | 2190-792 | 1300 | 98.9 | 13-20 | ||
| BDW1000-Y | 7.5 | 35793-54840 | 518-235 | 495-181 | 560 | 84.0 | 6-9 | 80%-55% |
| 11 | 40663-62301 | 669-304 | 639-234 | 640 | 86.8 | 7-10 | ||
| 15 | 45772-70129 | 848-385 | 810-296 | 720 | 89.3 | 7-12 | ||
| 18.5 | 49056-75162 | 974-442 | 931-341 | 770 | 90.8 | 8-13 | ||
| 22 | 51999-79670 | 1094-497 | 1045-383 | 820 | 92.1 | 8-13 | ||
| 30 | 57663-88348 | 1345-611 | 1286-471 | 900 | 94.4 | 9-15 | ||
| 37 | 61844-94754 | 1548-703 | 1479-542 | 970 | 95.9 | 10-16 | ||
| 45 | 66008-101134 | 1763-801 | 1685-617 | 1040 | 97.3 | 11-17 | ||
| BDW1000-Z | 55 | 70582-108143 | 2016-916 | 1926-705 | 1110 | 98.7 | 12-18 | |
| 75 | 78270-119922 | 2479-1126 | 2369-868 | 1230 | 101.0 | 13-20 |
