Brochure
SS Spiral Diffuser (Page 38)
½" wide slot - nonducted
Airflow Rate
(CFM/Linear Foot)
7 10 13 17 20 23 27 30 33 37
Static Pressure .002 .003 .006 .009 .016 .018 .024 .030 .037 .045
Horizontal Throw 7-4-2 11-6-4 15-7-5 19-9-6 22-11-7 26-13-9 30-15-10 33-17-11 37-19-12 41-20-14
Noise Criteria <15 <15 <15 <15 <15 <15 19 21 23 25
Airflow Rate
(CFM/Linear Foot)
10 17 23 30 37 43 50 57 63 70
Static Pressure .001 .002 .004 .007 .011 .015 .020 .026 .032 .039
Horizontal Throw 6-3-2 9-5-3 13-6-4 17-8-6 20-10-7 24-12-8 28-14-9 31-16-10 35-18-12 39-19-13
Noise Criteria <15 <15 <15 <15 <15 <15 19 23 27 31
Airflow Rate
(CFM/Linear Foot)
13 23 33 43 53 63 73 83 93 103
Static Pressure .001 .002 .004 .006 .009 .012 .017 .021 .027 .033
Horizontal Throw 5-3-2 10-5-3 14-7-5 18-9-6 22-11-7 26-13-9 30-15-10 34-17-11 38-19-13 42-21-14
Noise Criteria <15 <15 <15 <15 <15 18 21 25 30 33
Airflow Rate
(CFM/Linear Foot)
17 30 43 57 70 83 97 110 123 137
Static Pressure .001 .002 .003 .005 .008 .012 .016 .020 .025 .031
Horizontal Throw 6-3-2 10-5-3 15-8-5 20-10-7 24-12-8 29-14-10 31-17-11 38-19-13 43-21-14 47-24-16
Noise Criteria <15 <15 <15 <15 18 20 22 27 32 34
Airflow Rate
(CFM/Linear Foot)
10 15 20 25 30 35 40 45 50 55
Static Pressure .002 .004 .007 .011 .015 .020 .027 .034 .042 .050
Horizontal Throw 6-3-2 9-5-3 12-6-4 15-8-5 18-9-6 22-11-7 25-12-8 28-14-9 31-15-10 34-17-11
Noise Criteria <15 <15 <15 <15 19 21 25 30 34 39
Airflow Rate
(CFM/Linear Foot)
15 25 35 45 55 65 75 85 95 105
Static Pressure .001 .003 .005 .008 .012 .017 .022 .029 .036 .044
Horizontal Throw 5-2-2 8-4-3 11-5-4 14-7-5 17-8-6 20-10-7 23-12-8 26-13-9 29-15-10 32-16-11
Noise Criteria <15 <15 <15 <15 19 26 32 35 38 41
Airflow Rate
(CFM/Linear Foot)
20 35 50 65 80 95 110 125 140 155
Static Pressure .001 .002 .004 .007 .010 .014 .019 .024 .030 .037
Horizontal Throw 5-2-2 8-4-3 11-6-4 15-7-5 18-9-6 22-11-7 25-12-8 28-14-9 32-16-11 35-18-12
Noise Criteria <15 <15 <15 18 23 28 33 37 40 43
Airflow Rate
(CFM/Linear Foot)
25 45 65 85 105 125 145 165 185 205
Static Pressure .001 .002 .004 .006 .009 .013 .017 .023 .028 .035
Horizontal Throw 5-2-2 9-4-3 13-6-4 16-8-5 20-10-7 24-12-8 28-14-9 32-16-11 38-19-12 40-20-13
Noise Criteria <15 <15 17 22 25 29 33 37 40 43
Airflow Rate
(CFM/Linear Foot)
13 20 27 33 40 47 53 60 67 73
Static Pressure
.002 .005 .009 .014 .020 .027 .036 .045 .056 .067
Horizontal Throw
5-2-2 7-4-2 10-5-3 12-6-4 15-7-5 17-9-6 20-10-7 22-11-7 25-12-8 27-14-9
Noise Criteria
<15 <15 <15 20 25 31 37 41 43 45
Airflow Rate
(CFM/Linear Foot)
20 33 47 60 79 87 100 113 127 140
Static Pressure
.001 .003 .007 .011 .016 .023 .030 .038 .048 .059
Horizontal Throw
4-2-1 6-3-2 9-4-3 11-6-4 14-7-5 16-8-5 19-9-6 21-10-7 23-12-8 26-13-9
Noise Criteria
<15 <15 <15 23 32 35 40 44 48 51
Airflow Rate
(CFM/Linear Foot)
27 47 67 87 107 127 147 167 187 207
Static Pressure
.001 .003 .005 .009 .013 .019 .025 .032 .040 .049
Horizontal Throw
4-2-1 6-3-2 9-5-3 12-6-4 15-7-5 17-9-6 20-10-7 23-11-8 25-13-8 28-14-9
Noise Criteria
<15 <15 <15 23 32 35 40 44 48 51
Airflow Rate
(CFM/Linear Foot)
33 60 87 113 140 167 193 220 247 273
Static Pressure
.001 .002 .005 .008 .012 .017 .023 .030 .038 .046
Horizontal Throw
4-2-1 7-3-2 10-5-3 13-7-4 16-8-5 19-10-8 22-11-7 25-13-8 29-14-10 32-16-11
Noise Criteria
<15 16 22 27 31 37 42 46 50 54
1-Slot
2-Slot
3-Slot
2-Slot
4-Slot
¾" wide slot - nonducted
1-Slot
2-Slot
3-Slot
4-Slot
3-Slot
4-Slot
1" wide slot - nonducted
1-Slot
1/2” wide slot–nonducted
3/4” wide slot–nonducted
1” wide slot–nonducted
See notes on next page and see page 38 for min. duct diameter.
See notes on next page and see page 38 for min. duct diameter.
See notes on next page and see page 38 for min. duct diameter.
Engineering Data
Engineering Data
111
Recommended Noise Criteria and Face Velocity Ranges are on page 75