8
Model H-G/H-GB Centrifugal Roof Exhaust Fan
Model
Curb
Cap
Damper
Roof
Opening
Number of Screws (per side)
Outside
Flange
**Approx.
Weight
With Metal/Steel and Concrete With Wood
H-G 060, 065, 070, 075
17
(432)
8
(203)
10
1
⁄
2
(267)
5
5
26
(660)
18
(8 kg)
H-G 080, 085, 090, 095
17
(432)
10
(254)
12
1
⁄
2
(318)
5
5
26
(660)
26
(12 kg)
H-G 101, 121
19
(483)
12
(305)
14
1
⁄
2
(368)
5
5
28
(711)
43
(20 kg)
H-G 131,141
22
(559)
16
(406)
18
1
⁄
2
(470)
5
5
31
(787)
59
(27 kg)
H-G 150
26
(660)
16
(406)
18
1
⁄
2
(470)
5
7
35
(889)
59
(27 kg)
H-G 160, 170
30
(762)
18
(457)
20
1
⁄
2
(521)
7
7
39
(991)
81
(37 kg)
H-G 180
30
(762)
18
(457)
20
1
⁄
2
(521)
7
7
39
(991)
118
(54 kg)
H-GB 071, 081, 091
19
(483)
12
(305)
14½
(368)
5
5
28
(711)
58
(26 kg)
H-GB 101, 101HP
19
(483)
12
(305)
14½
(368)
5
5
28
(711)
63
(29 kg)
H-GB 121
19
(483)
12
(305)
14½
(368)
5
5
28
(711)
66
(30 kg)
H-GB 131
19
(483)
12
(305)
14½
(368)
5
5
28
(711)
67
(30 kg)
H-GB 141, 141HP
22
(559)
16
(406)
18½
(470)
5
5
31
(787)
83
(38 kg)
H-GB 161, 161HP
22
(559)
16
(406)
18½
(470)
5
5
31
(787)
89
(40 kg)
H-GB 180, 180HP
30
(762)
18
(457)
20½
(521)
7
7
39
(991)
125
(57 kg)
H-GB 200, 200HP
30
(762)
18
(457)
20½
(521)
7
7
39
(991)
138
(63 kg)
H-GB 220, 220HP, 240, 240HP
34
(864)
24
(610)
26½
(673)
7
7
43
(1092)
158
(72 kg)
H-GB 260
40
(1016)
30
(762)
32½
(826)
7
9
49
(1245)
305
(138 kg)
H-GB 300, 300HP
40
(1016)
30
(762)
32½
(826)
7
9
49
(1245)
320
(145 kg)
• All dimensions are in inches (millimeters). *Approximate weight is shown in pounds (kilograms) without the roof curb and is cataloged with the largest Open Drip Proof motor. **May be
greater depending on the motor.
• The roof curb should be 1½ inches (38 millimeters) less than the curb cap to allow for roofing and flashing.
Typical Curb Installation
Concrete Deck Anchoring
Metal Building/Steel Deck Anchoring
Wood Deck Anchoring
Fig. 5
Minimum Concrete
Strength of 2000 PSI
Roof Opening
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
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
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
(All three options)
11/4 in.
(32 mm)
11/4 in.
(32 mm)
1 in.
(25 mm)
Insulation
Roof Opening
5 in.
(127 mm)
Mounting Flange
Outside Flange
Center fasteners
on flange
Use
3
⁄
8
in.
(10 mm)
expansion anchor
or equal into concrete.
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.
Minimum 13/4 in.
(44 mm)
edge distance
2
1
⁄
2
in.
(64 mm)
Embedment Recommended
minimum 1
5
⁄
8
in.
(41 mm)
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
CONCRETE DECK ANCHORING DETAIL
