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9
Typical Anchoring
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 Motor HP
Ultimate Steel Grease Fan 4 =
1
⁄4 10 = 1 30 = 3
3 =
1
⁄3 15 = 1
1
⁄2 50 = 5
Fan Size 5 =
1
⁄2 20 = 2 75 = 7
1
⁄2
140 through 200 7 =
3
⁄4
Pressure Level
HP - High Pressure Wheel
XP - Extended High Pressure Wheel
Metal Building/Steel Deck Anchoring
USGF
Size
Fan Curb Cap Roof Opening Fasteners Per Side Outside Flange
141 - 161 22 x 22 (559 x 559) 18½ x 18½ (470 x 470) 5 31 x 31 (787 x 787)
180 - 200 30 x 30 (762 x 762) 20½ x 20½ (521 x 521) 7 39 x 39 (991 x 991)
All dimensions in inches (millimeters).
Roof Opening
Minimum 12 ga Steel
Roof Truss
Outside Flange
Center fasteners
on flange
Use #12-14 self-drilling screws or equal.
Fasteners one on each corner as detailed.
Each side at center of unit. Maximum
fastener spacing of 8 in. (203 mm), add
additional fasteners to satisfy.
Corrugated Roof Deck
5 in. (127 mm) Mounting Flange
1 in. (25 mm) Insulation
Outside of Roof Curb
1 in. (25 mm) less than
Fan Curb Cap
H-GPF Curb Height
8 to 18 in. (203 to 457 mm)
(Optional 24 in. (610 mm) SD Curb)
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)
Wood Deck Anchoring
USGF
Size
Fan Curb Cap Roof Opening Fasteners Per Side Outside Flange
140 - 160 22 x 22 (559 x 559) 18½ x 18½ (470 x 470) 7 31 x 31 (787 x 787)
180 - 200 30 x 30 (762 x 762) 20½ x 20½ (521 x 521) 7 39 x 39 (991 x 991)
All dimensions in inches (millimeters).
Roof Opening
Center fasteners
on flange
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.
Wood Support Member
Nominal 2 x 4, 6, 8
Wood Decking
2 in. (51 mm) Minimum Embedment
5 in. (127 mm) Mounting Flange
1 in. (25 mm) Insulation
H-GPF Curb Height
8 to 18 in. (203 to 457 mm)
(Optional 24 in. (610 mm) SD Curb)
Outside of Roof Curb
1 in. (25 mm) less than
Fan Curb Cap
Corner Detail
1¼ in. (32 mm)
1¼ in.
(32 mm)