Roof Downblast - BeltExhaustDrive
SizeBelt-Drive: GB • H-GB
GB-161HP
283⁄8
(721)
22
(559)
*233⁄4
(603)
4(102)
13⁄4 (44)
Static Pressure (Pa)
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| HP |
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| Density 0.075 lb/ft3 |
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| Density 1.2 kg/m3 |
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wg) |
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(in. |
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Pressure |
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Static |
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| L | E | C |
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Damper Size = 16 x 16 (406 x 406) Roof Opening = 181/2 x 181/2 (470 x 470) Shroud Thickness = 0.051 (1.3) Motor Cover Thickness = 0.040 (1.0) Curb Cap Thickness = 0.064 (1.6) ^Approximate Unit Weight = 88 lbs. (40 kg)
All dimensions in inches (millimeters).. *May be greater depending on motor.. ^Weight shown is largest cataloged Open
Volume (cfm)
Volume (m3/hr)
Motor | Fan |
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| Static Pressure in Inches wg |
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HP | RPM |
| 0..5 | 0..625 | 0..75 | 1 | 1..25 |
| 1..5 | 1..75 | 2 | 2..25 |
| 2..5 |
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161HP |
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| 825 | CFM | 702 |
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| BHP | 0..11 |
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| MAXIMUM BHP AT A GIVEN RPM = (RPM/1708)3 |
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| Sones | 6..5 |
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| MAXIMUM RPM = 1740 |
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| CFM | 1093 | 919 | 585 |
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| TIP SPEED (ft/min) = RPM x 4.352 |
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1/4 | 960 | BHP | 0..18 | 0..17 | 0..15 |
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| MAXIMUM MOTOR FRAME SIZE = 145T |
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| Sones | 7..7 | 7..6 | 8..0 |
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| CFM | 1380 | 1271 | 1139 | 589 |
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| 1095 | BHP | 0..26 | 0..26 | 0..26 | 0..21 |
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| Sones | 9..0 | 9..0 | 8..9 | 9..5 |
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| CFM | 1606 | 1514 | 1416 | 1149 |
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1/3 | 1210 | BHP | 0..34 | 0..35 | 0..35 | 0..34 |
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| Sones | 10..6 | 10..3 | 10..4 | 10..3 |
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| CFM | 1718 | 1636 | 1545 | 1333 | 949 |
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| 1270 | BHP | 0..39 | 0..40 | 0..40 | 0..41 | 0..37 |
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| Sones | 11..4 | 11..2 | 11..1 | 11..1 | 11..4 |
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| CFM | 1829 | 1753 | 1668 | 1483 | 1204 |
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1/2 | 1330 | BHP | 0..44 | 0..45 | 0..46 | 0..47 | 0..45 |
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| Sones | 12..3 | 12..1 | 11..9 | 12..1 | 12..0 |
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| CFM | 1938 | 1865 | 1789 | 1619 | 1399 |
| 1032 |
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| 1390 | BHP | 0..50 | 0..51 | 0..52 | 0..53 | 0..53 |
| 0..48 |
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| Sones | 13..3 | 13..0 | 12..8 | 12..7 | 12..7 |
| 13..1 |
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| CFM | 2109 | 2041 | 1973 | 1822 | 1654 |
| 1416 |
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| 1485 | BHP | 0..60 | 0..61 | 0..63 | 0..64 | 0..65 |
| 0..63 |
| 0..57 |
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3/4 |
| Sones | 14..9 | 14..7 | 14..4 | 13..8 | 13..7 |
| 14..0 |
| 14..7 |
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| CFM | 2275 | 2214 | 2150 | 2016 | 1868 |
| 1704 |
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| 1580 | BHP | 0..72 | 0..73 | 0..75 | 0..77 | 0..77 |
| 0..791 |
| 0..75 | 0..67 |
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| Sones | 16..7 | 16..7 | 16..4 | 15..5 | 14..7 |
| 14..8 |
| 15..4 | 16..6 |
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| CFM | 2414 | 2357 | 2297 | 2175 | 2037 |
| 1887 |
| 1702 | 1441 | 996 |
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| 1660 | BHP | 0..82 | 0..84 | 0..85 | 0..89 | 0..89 |
| 0..91 |
| 0..90 | 0..86 | 0..75 |
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1 |
| Sones | 18..3 | 18..8 | 18..3 | 16..7 | 16..2 |
| 15..8 |
| 15..8 | 17..1 | 20 |
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| CFM | 2551 | 2497 | 2442 | 2325 | 2200 |
| 2066 |
| 1917 | 1714 | 1452 |
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| 1740 | BHP | 0..94 | 0..96 | 0..97 | 1..01 | 1..03 |
| 1..03 |
| 1..05 | 1..03 | 0..98 |
| 0..85 |
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| Sones | 20 | 21 | 21 | 18..4 | 17..5 |
| 17..2 |
| 16..8 | 17..2 | 19..2 |
| 28 |
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Performance certified is for installation type A: Free inlet, Free outlet. Power rating (BHP) does not include transmission losses. Performance ratings include the effects of a birdscreen. The sound ratings shown are loudness values in hemispherical sones at 5 ft. (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for installation type A: free inlet hemispherical sone levels.
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