Typical Anchoring
Metal Building/Steel Deck Anchoring
Corner Detail
11/4 in. (32 mm)
11/4 in. |
(32 mm) |
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| Outside of Roof Curb |
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| 1 in. (25 mm) less than |
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| Fan Curb Cap |
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| 1 in. (25 mm) Insulation |
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8 to 18 in. (203 to 457 mm) |
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(Optional 24 in. (610 mm) SD Curb) |
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| Roof Opening |
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| Minimum 12 ga Steel |
Roof Truss | 5 in. (127 mm) Mounting Flange |
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| Outside Flange |
Use
Each side at center of unit. Maximum fastener spacing of 8 in. (203 mm), add additional fasteners to satisfy.
Corrugated Roof Deck
Center fasteners on flange
USGF | Fan Curb Cap | Roof Opening | Fasteners Per Side | Outside Flange | |
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141 - 161 | 22 x 22 (559 x 559) | 181/2 x 181/2 (470 x 470) | 5 | 31 x 31 (787 x 787) | |
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180 - 200 | 30 x 30 (762 x 762) | 201/2 x 201/2 (521 x 521) | 7 | 39 x 39 (991 x 991) | |
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All dimensions in inches (millimeters).
Wood Deck Anchoring
Corner Detail
11/4 in. (32 mm)
11/4 in. |
(32 mm) |
Outside of Roof Curb 1 in. (25 mm) less than Fan Curb Cap
1 in. (25 mm) Insulation
8 to 18 in. (203 to 457 mm) (Optional 24 in. (610 mm) SD Curb)
Roof Opening
Wood Decking
5 in. (127 mm) Mounting Flange
Wood Support Member
Nominal 2 x 4, 6, 8
Outside Flange
Use #12 Wood Screws or equal into minimum No. 1/No. 2 Southern Pine wood support.
Fasteners one on each corner as detailed.
Each side at center of unit. Maximum fastener spacing of 6 in. (152 mm), add additional fasteners to satisfy.
2 in. (51 mm) Minimum Embedment
Center fasteners on flange
USGF | Fan Curb Cap | Roof Opening | Fasteners Per Side | Outside Flange | |
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140 - 160 | 22 x 22 (559 x 559) | 181/2 x 181/2 (470 x 470) | 7 | 31 x 31 (787 x 787) | |
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180 - 200 | 30 x 30 (762 x 762) | 201/2 x 201/2 (521 x 521) | 7 | 39 x 39 (991 x 991) | |
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All dimensions in inches (millimeters).
Model Number Code
The Model number system is designed to completely identify the fan. The correct code letters must be specified to designate the correct configuration. The remainder of the model number is determined by the size and performance selected from the following pages.
USGF - 140 HP - 5
Configuration 
Ultimate Steel Grease Fan
Fan Size
140 through 200
Motor HP
4 = 1⁄4 | 10 = 1 | 30 = 3 |
3 = 1⁄3 | 15 = 11⁄2 | 50 = 5 |
5 = 1⁄2 | 20 = 2 | 75 = 71⁄2 |
7 = 3⁄4 |
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Pressure Level
HP - High Pressure Wheel
XP - Extended High Pressure Wheel