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LD Dimensions
LDP Dimensions
1
3
⁄4
(44)
1
3
⁄4
(44)
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 in the airstream. The sound ratings shown are loudness values in fan sones at 5 feet (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values
shown are for installation type A: Free inlet hemispherical sones.
LD/LDP 60-75
Direct Drive
Model
Number
Motor
HP
Fan
RPM
Watts
CFM / Static Pressure in Inches wg
0 0.1 0.125 0.2 0.25 0.3 0.375 0.4 0.45 0.5
LD/LDP-60 1/60 1590* 51 W
CFM 202 171 164 139 119 97
Sones 4.8 4.3 4.3 4.0 3.8 3.6
LD/LDP-65 1/30 1680* 70 W
CFM 274 245 238 208 187 165 129 112
Sones 5.6 5.3 5.2 5.0 5.1 5.1 5.1 5.2
LD/LDP-70 1/30 1665* 73 W
CFM 360 324 314 282 257 231 188 171 132
Sones 6.4 6.0 5.9 5.5 5.4 5.3 5.2 5.1 5.0
LD/LDP-75 1/25 1620* 79 W
CFM 400 360 351 317 290 264 222 206 168 122
Sones 5.8 5.2 5.1 4.9 4.7 4.5 4.2 4.1 4.0 3.8
17
(432)
13
1
⁄2
(343)
17
(432)
22
(559)
27
(686)
13
(330)
2
(51)
17
(432)
17
(432)
23
(584)
23
(584)
11
1
⁄2
(292)
0 50 100 150 200 250 300 350 400 450 500
0
20
40
60
80
100
120
140
0 50 100 150 200 250 300
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Static Pressure in. wg
cfm
m
3
/hr
Static Pressure Pa
Size 60 and 65
RPM
Density 0.075 lb/ft
3
LD/LDP-60
LD/LDP-65
13
1
⁄2
(343)
0 100 200 300 400 500 600
0
20
40
60
80
100
120
140
0 50 100 150 200 250 300 350 400
0.0
0.1
0.2
0.3
0.4
0.5
0.6
Static Pressure in. wg
cfm
m
3
/hr
Static Pressure Pa
Size 70 and 75
RPM
Density 0.075 lb/ft
3
LD/LDP-70
LD/LDP-75
LD 60 thru LD 75 LDP 60 thru LDP 75
Hood Thickness 24 ga -
Cover Thickness - 0.064 (0.029)
Louver Thickness - 0.081 (0.036)
Curb Cap Thickness 0.064 (0.029) 0.064 (0.029)
Damper Size Square 8 (203) 8 (203)
Roof Opening Square 10
1
⁄2 (267) 10
1
⁄2 (267)
Weight* Galvanized, 37 (17) Aluminum, 49 (22)
All dimensions are in inches (millimeters). Weight in pounds (kilograms).
*Weight shown is the largest cataloged Open Drip Proof motor. See page 8 for
severe duty LDP dimensions.