Gb belt drive, G direct drive – Greenheck G/GB (471558) User Manual
Page 5

Downblast Centrifugal Roof Exhaust
5
®
Model
Curb Cap
Damper
Roof
Opening
*Approx.
Weight
G 060, 065, 070, 075
17 (432) 8
(203)
10½ (267)
18 (8)
G 080, 085, 090, 095
17 (432) 10
(254)
12½ (318)
26 (12)
G 097, 098, 099
19 (483)
12 (305)
14½ (368)
57 (26)
G 103, 103 HP
19 (483)
12 (305)
14½ (368)
62 (28)
G 123
19 (483)
12 (305)
14½ (368)
65 (30)
G 133
19 (483)
12 (305)
14½ (368)
66 (30)
G 143, 143 HP
22 (559)
16 (406)
18½ (470)
76 (35)
G 163
22 (559)
16 (406)
18½ (470)
80 (36)
G 183
30 (762)
18 (457)
20½ (521)
119 (54)
G 203
30 (762)
18 (457)
20½ (521)
130 (59)
• All dimensions are in inches (millimeters).
* Approximate weight shown in pounds (kilograms) is the largest
cataloged Open Drip Proof motor.
• The roof curb should be 1½ in. (38 mm) less than the curb cap to
allow for roofing and flashing.
Model
Curb Cap
Damper
Roof
Opening
*Approx.
Weight
GB 071, 081, 091
19 (483)
12 (305)
14½ (368)
58 (26)
GB 101, 101HP
19 (483)
12 (305)
14½ (368)
63 (29)
GB 121
19 (483)
12 (305)
14½ (368)
66 (30)
GB 131
19 (483)
12 (305)
14½ (368)
67 (30)
GB 141, 141HP
22 (559)
16 (406)
18½ (470)
83 (38)
GB 161, 161HP
22 (559)
16 (406)
18½ (470)
89 (40)
GB 180, 180HP
30 (762)
18 (457)
20½ (521)
125 (57)
GB 200, 200HP
30 (762)
18 (457)
20½ (521)
138 (63)
GB 220, 220HP,
240, 240HP
34 (864)
24 (610)
26½ (673)
158 (72)
GB 260
40 (1016) 30 (762)
32½ (826)
305 (138)
GB 300, 300HP
40 (1016) 30 (762)
32½ (826)
320 (145)
GB 330
46 (1168) 36 (914)
38½ (978)
385 (175)
GB 360, 360HP
46 (1168) 36 (914)
38½ (978)
403 (183)
GB 420
52 (1321) 42 (1067) 44½ (1130) 495 (225)
GB 480
52 (1321) 48 (1219) 50½ (1283) 623 (283)
GB 500
64 (1626) 54 (1372) 56½ (1435) 687 (312)
GB 540
64 (1626) 54 (1372) 56½ (1435) 748 (339)
• All dimensions are in inches (millimeters).
* Approximate weight shown in pounds (kilograms) is the largest
cataloged Open Drip Proof motor.
• The roof curb should be 1½ in. (38 mm) less than the curb cap to
allow for roofing and flashing.
GB Belt Drive
Figure 6 - Typical Roof Mounting Installation
Disconnect
Recommended Duct
and Damper Size
Damper
8 or 12 in.
(203 or 305)
1¼ in.
(32)
Recommended Roof
Opening
1¼ in.
(32)
¾ in.
(19)
Dimensions shown in
inches
(mm)
Wiring by Others
G Direct Drive
Figure 5 - Typical Roof Mounting Installation
Recommended Duct
and Damper Size
Damper
8 or 12 in.
(203 or 305)
1¼ in.
(32)
Recommended Roof
Opening
1¼ in.
(32)
Wiring by Others
Screws
Disconnect
¾ in.
(19)