LINEAR SLOT DIFFUSERS
BETA i n d u s t r i a l PRODUCTS CATALOGUE
PRODUCT BULLETIN
4
BETA i n d u s t r i a l Dubai Head Office: Tel: +9 71 4 706 9777 Fax: + 971 4 706 9787
Tel: +971 2 645 0107 Fax: +971 2 645 0167 Email:
[email protected]
P.O.Box 50708, Dubai United Arab Emirates
w w w. be t ag . c om
BETA I n d u s t r i a l
index
>>
1-2
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3-4
>>
PERFORMA NCE DATA
5-11
LINEAR SLOT DIFFUSERS
>>
Flush - mounted linear diffuser.
>>
Available in 1 to 6 slots.
>>
Standard lenght : 1000mm & 2000mm per section. Other lengths are availabe on request.
>>
180 fully adjustable air flow pattern by means of two air
>>
Available with hit-and-miss damper which controls the air flow
deflections per slot.
rate without affecting the air flow pattern; can be used as an equalizing grid.
>>
For each slot the air deflector and hit-and-miss damper are individually adjustable.
>>
Removable flange type end cap allows extending or shortening slot diffuser line without replacing existing pieces.
>>
The deflector and the hit and miss damper are powder coated with black color as standard.
dimensions & discharge details
Neck Size 78 Horizontal Left and Horizontal Right Discharge
5,5
5,5
9,7
27,3
55
9,1
Hit-and-miss damper
28,5
19,5
2,6
18,1
Deflector
28,5
Flange Size
Neck Size
Neck Size
78
78
9,7
5,5
5,5
5,5
9,1
9,7
18,1
Flange Size
01
28,5
19,5
Flange Size
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
28,5
2,6
28,5
2,6
19,5
18,1 Deflector
Deflector
28,5
27,3
27,3
55
55
9,1
Horizontal Left and Vertical Discharge
5,5
LINEAR SLOT DIFFUSERS
linear slot diffuser fixing details
Available types of finishing: >> Natural anodized aluminium finish >> Powder coated to RAL codes Standard Neck & Flange Sizes: Standard slot size 20mm
Plenum By Others
Adjustable Screw By Others
Hanging Bridge bracket By Others
Supporting Clamps
False Ceiling By Others Slot Diffuser
No. of Slots
1 Slot
2 Slot
3 Slot
4 Slot
5 Slot
6 Slot
Neck Size: (mm)
47
85
123
161
199
237
Flange Size: (mm)
76
114
152
190
228
266
ORDERING SYSTEM TYPE
CURVE
SIZE
FINISH RAL:
POWDER COATED FINISH AS PER RAL CODES
ANODIZED: ANODIZED ALUMINIUM FINISH
LENGTH
NUMBER OF SLOTS
CURVE : IF CURVE REQUIRED (ONLY RLD)
CURVE
SLD: SLPPLY LINEAR DIFFUSER WITH DEFLECTORS WITH HIT & MISS DAMPER
EXAMPLE:SLD
02
2000 3S RAL 9016
RLD:RETURN LINEAR DIFFUSER WITHOUT DEFLECTORS WITH SQUARE SHAPE PUNCHED STRIP.
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
LINEAR SLOT DIFFUSERS ACCESSORIES 1 - End Caps (F1) (A) - L-Shaped End Caps
L-shape flange : 30 55mm, available in different lengths to match slot diffuser width. Fixed at the end of slot diffuser line. Very easy to install and remove. Gives flexibility to extend or shorten slot diffuser without replacement of existing pieces.
30 STRAIGHT JOINT END CAP
Supplies FREE with fixing screws. Hole for Self-tapping screw
Available in 1 to 6 slot
(B) -Mitered Corners End Caps
46 O
O
44
30
Hole for Self-tapping screw
2 - Corner pieces (F2) Available in 1 to 6 slot Available in any combination of X.Y (X-300 mm Y=300 mm as standard ) : 45 , 90 , 135
3 - Mitered ends (F3, F4) Standard lengths are available in mitered ends of 45 and 135
03
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
MITERED JOINT END CAP
ACCESSORIES
F5
1m ete
r
Minimum radius = 1000mm
Mi n im um
Ra
d iu
s:
For curved items, different section used as below drawing.
NECK SIZE = 123 mm
55
Type RLD 3S without deflectors with hit-and- miss dampers FLANGE SIZE = 152 mm
04
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
LINEAR SLOT DIFFUSERS PERFORMANCE DATA
PRODUCTS TESTING The following tables include the results of tests conducted on three linear slot diffusers. The test results include Noise Criteria (NC), static pressure versus air flow, throw and Ak. The diffusers were selected and supplied by Beta In October 1991. The extrapolations and interpolation were made to cover a full range of sizes and parameters according to ETL testing laboratories Inc. who made the tests.
TEST METHOD
The air diffusers were tested in accordance with the Air diffusion council test code for grilles, registers and diffusers n o. ADC 1062.GRD.84, the test was conducted in ETL testing laboratories.
The diffusers were installed in the ADC facility and supplied with measured volume of air. The static pressure was measured (1-1.5) duct diameters upstream of the diffuser inlet.
Acoustical data was obtained employing Bruel and Kjaer digital frequency analyzer, and analyzed by computer. Sound power levels were plotted on a graph of noise criteria curves which are in the ADC codes.
NOTES:
05
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
PERFORMANCE DATA
SLD/RLD - SUPPLY
VERTICAL DISCHARGE
*S.I. UNITS 16 MM
SLOTS L/S per meter
A AK K
24 35 47
1
2.4 3.0 4.3
15 19 28 34
7.6
41
83 94
11.31 14.97
24
0.31
2.4
16
47
1.19
5.2
20
71
2.66
6.4
28
8.2 10.0
40 46
Pt
0.58 1.32 2.34 0.008 3.66
118
4.77 7.42
142
10.72
54
165
14.69
59
47 71
0.56 1.23 2.19 3.41
3.0 5.2 6.7 8.5
16 20 28 36
0.36 0.79 1.40 0.030 2.18
142
4.92
10.3
43
165 189
6.67 8.73
71
0.75
3.15 4.27 5.59 0.48 0.84 1.32 0.037 1.91 2.59 3.38 4.32
0.017
0.024
45 51
48 53 4.3
16
94
1.31
5.2
20
118
2.06
6.4
28
2.98
8.2
33
4.05
10.3
0.030
165 189 212
5.28 6.75
94 118 142 165
0.037
189
39
41 46
0.88 1.34 1.94
4.6 5.5 7.0
15 19 25
2.66
8.5
31
3.45
10.0
35
212
4.36
39
236
5.39 0.95
4.6
44 15
1.39
5.8
19
1.91
7.0
23
2.45
8.8
28
3.14 3.89 5.56
10.7
31 34 44
118 142 165 189
0.043
212 236 283
0.046
0.054
25 MM
Th
NC
2.1
<15
2.7 3.7
15 22 0.010
Pt
Th
NC
0.37 0.84 1.50
1.8 2.4 3.1
<15 <15 18
5.5
27
2.34
4.9
22
7.0
33 36 41 <15
3.41 4.63 6.13 0.13
6.4
1.8
26 29 33 <15
16
0.49
4.0
<15
5.8
22
5.2
18
7.6 9.1
32 37
1.09 1.95 3.04
7.0 8.2
26 30
2.1 4.6
0.026
43
4.39
47
6.02
2.7 4.6 6.1 7.9
<15 16 22 29
0.23
9.4
34 38
0.51 0.90 1.40
2.4 4.0 5.5 7.3
34
2.02
8.5
2.73
4.0
38 42 <15
4.9
16
5.8
22
7.6
26
9.4
0.038
3.58 0.31
0.046
<15 <15 18 23 27 30
3.7
34 <15
0.54
4.6
<15
0.84 1.22
5.2 7.0
21
18
31
1.66
8.5
25
33
2.16
26
2.76 0.36 0.55
4.0 4.9 5.8
30 <15 <15 16
0.56 0.86 1.24 1.70
4.3 5.2 6.4
37 < 15 15 20
7.9
25
2.21 2.79 3.45
9.1
0.61 0.89 1.22 1.57 2.01 2.49 3.56
AK
0.79 0.058
1.09
7.3
20
28
1.41
8.2
22
1.79 2.21
4.3
31 35 < 15
5.2
15
6.4
18
8.2
22 25 27
9.8
0.068
35
25 28
0.39
4.0
<15
0.57 0.78
4.6
<15 <15
1.00
5.8 7.6
1.28
8.9
20
1.59 2.28
CONDITIONS
SYMBOLS
06
AK
5.33 7.24 9.58 0.20 0.76 1.70 0.021 3.05 4.75 6.86 9.40
142
6
0.91 2.06 3.66
6.1
118
5
NC
8.33
94
4
Th
5.72
94
3
Pt
71
59
2
0.006
20 MM
L/S
: Air volume in liter per second.
* Supply
Ak
: Effective face area in meter Square per 1000 mm.
* Vertical discharge flow pattern.
Pt.
: Total pressure in millimeters water gauge.
* Noise Criteria values are based on(10 db) room attenuation.
Th.
: Throw in meters.
* Damper is fully open.
NC
: Noise Criteria.
* Throw values are based on terminal velocity of 0.50 m/s
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
18 22 28
SLD/RLD - SUPPLY HORIZONTAL DISCHARGE
*S.I. UNITS
16mm SLOTS L/S per meter
2
5
Ak
Pt
Th
NC
Ak
18
0.51
0 .3-1.2-2.1
<15
35
2.78
1.2-2.1-3.3
31
1.78 0.9-1.8-3.0
25
1.44
0.9-1.5-2.7
20 26
4.97
1.8-3.0-4.6
41
3.18 1.5-2.7-4.3
33
2.04
1.2-2.4-4.0
59
7.73
2.7 -4.3-7.0
48
4.95
2.4-4.0-6.4
38
3.17
2.1-3.7-5.8
30
71
11.11
4.0-5.8-8.5
54
7.11 3.7-5.2-7.9
43
4.55
3.4-4.6-7.3
34
24
0.39
1.2-1.8-2.7
16
0.25
0.9-1.5-2.4 <15
0.16
0.9-1.2-2.1
<15
47
1.59
1.5-3.3-5.5
25
1.02
1..2-3.0-5.2
20
0.65
0.9-2.7-4.6
16
3.58
1.8-4.0-7.3
39
2.29
1.5-3.7-6.7
31
1.47
1.2-3.4-6.1
25
6.27
2.7-6.1-9.4
50
4.01
2.4-5.5-8.5
40
2.57
2.1-4.9-7.9
32
71
0.004
0.001
0.005
0.014
0.006
0.018
118
9.92
4.0-7.6-11-.0
56
6.35
3.7-7.0-10.1
45
4.06
3.4-6.4-9.2
36
47
0.80
1.2-1.8-3.7
21
0.51
0.9-1.5-3.4
17
0.33
0.9-1.2-3.1
<15
71
1.75
1.8-3.0-6.1
29
1.12
1.5-2.7-5.5
23
0.72
1.2-2.4-5.2
18
3.09
2.1-4.3-7.6
39
1.98
1.8-4.0-7.0
31
1.27
1.5-3.7-6.4
25
94
0.018
0.022
0.028
118
4.84
3.0-6.1-9.7
48
3.10
2.7-5.5-8.8
38
1.98
2.4-4.9-8.2
30
142
7.38
4.3-7.3-11.3
53
4.72 4.0-6.7-10.4
42
3.02
3.7-6.1-9.5
34
71
1.00
1.5-2.1-4.9
24
0.64
1.2-1.8-4.6
19
0.41
1.9-1.5-4.3
15
1.12
1.5-3.0-5.5
25
0.72 1.2-2..7-5.2
20
1.75
1.8-4.0-6.7
30
1.12 1.5-3..7-6.1
24
2.7-5.5-8.5
1.75
118
0.024
2.73
1.8-3.3-6.1
31
2.1-4.3-7.3
38
0.030
0.038
142
3.97
3.0-6.1-9.4
44
2.54
35
1.63
165
5.36
4.0-7.6-11.3
50
3.43 3.7-7.0-10.4
40
2.20 3.4-6..4-9.5
94
1.34
1.8-2.4-5.5
26
0.86
1.5-2.1-4.9
21
0.55 1.2-1..8-4.6
17
118
2.06
2.4-3.7-6.7
33
1.32
2.1-3.4-6.1
26
0.84 1.8-3..1-5.5
21
28 32
2.98
3.0-4.6-7.6
38
1.91
2.7-4.3-7.0
30
1.22 2.4-4..0-6.4
24
3.7-6.4-9.7
43
2.59
3.4-5.8-8.8
34
1.66 2.8-5..2-7.9
27
189
5.31
4.3-7.6-11.0
49
3.40 4.0-7.0-10.1
39
2.18 3.7-6..4-9.2
31
118
1.59
1.8-2.7-5.5
28
1.02
1.5-2.4-4.9
22
0.65 1.2-1..8-4.3
18
142
2.27
2.4-3.7-6.7
35
1.45
2.1-3.4-6.1
28
0.93 1.8-3..1-5.5
22
3.09
3.0-4.9-7.9
39
1.98
2.7-4.6-7.3
31
1.27 2.4-4..0-6.7
25
4.05
3.3-6.4-10.0
44
2.59
3.0-5.8-9.1
35
1..66
. 2.7-5.2-8.2
28
48
3.30
3.7-7.0-10.4
38
. 2 .11
. 3.4-6.4-9.5
30
0.030
165
0.037
5.16
4.0-7.6-11.3
0.038
0.046
0.048
0.058
SYMBOLS
NOTES
L/S
: Air volume in liter per second.
Ak
: Effective face area in meter Square per 1000 mm.
* The large throw values are based on the minimum terminal velocity of 0.25m/Sec. * The middle throw values are based on the middle terminal velocity of 0.50 m/Sec. * The small throw values are based on the maximum terminal velocity of 0.75m/Sec.
Pt.
: Total pressure in millimeters water gauge.
Th.
: Throw in meters.
NC
: Noise Criteria.
Supply
* Horizontal Discharge flow pattern * Noise Criteria values are based on (10 db) room attenuation.
07
2.4-.4.9-7.9
4.05
142
CONDITIONS
* *
NC
0.79 0.3-1.2-2.4
189 212
*
Pt
23
165
6
NC
0.6-1.5-2.7
94
4
Th
1.23
94
3
Pt
25mm Th
24
47
1
Ak
20mm
Damper is fully open. The tested specimens were of 1000 mm length
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
SLD/RLD - RETURN
PERFORMANCE DATA 16mm SLOTS
L/S per meter
Ps
NC
35
3.38 5.95 9.13 13.81 18.66 3.97 5.80 7.19 11.11 15.88 3.97 6.19 8.94 12.14 20.16 6.34 8.61 11.11 16.78 24.92 4.44 7.86
24 31 40 49 55 24 31 36 45 53 25 33 39 46 54 28 35 40 48 55 26 35
12.30 17.66 24.02 6.19 9.64 13.89 18.86 24.69
43 48 55 29 36 44 49 55
47
1
59 71 83 71 83 94
2
118 142 94 118
3
142 165 212 142 165 189
4
236 283 142 189
5
236 283 330 189 236
6
283 330 378
*S.I. UNITS
20mm Ps NC
Ps
NC
2.16 3.81
1.38 2.44
15 20
19 25
25mm
5.84
32
3.74
26
8.84
39
5.66
31
11.94
44
7.64
35
2.54 3.71 4.60 7.11
19 19 25 29 36
1.63 2.37 2.94 4.55
15 20 23 29
10.16 2.54
42 20
6.50 1.63
34 16
3.96
26
2.53
21
5.72
31
3.66
25
7.77 12.90
37 43
4.97 8.26
30 34
4.06
22
2.60
18
5.51 7.11
28 32
3.53 4.55
22 26
10.74
38
6.87
30
15.95 2.84 5.03
44 21 28
10.21 1.82 3.22
35 17 22
7.87
34
11.30 15.37
38 44
3.96 6.17
23 29
5.04 7.23 9.84 2.53 3.95
: Air volume in liter per second.
P/s
: Negative static pressure in milimeters water gauge.
NC
: Noise Criteria.
8.89
35
5.69
28
39 44
7.72 10.11
31 35
CONDITIONS * Return * Damper is full open. * Noise Criteria values are based on(10 db) room attenuation * The tested specimens were of 1000mm length
08
18 23
12.07 15.80
SYMBOLS L/S
27 30 35
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
PERFORMANCE DATA
SLD/RLD - SUPPLY VERTICAL DISCHARGE
* IMPERIAL UNITS 3/5’’
Th
NC
Ak
23
8 10
<15 16
30
0.144
14
23
0.225
19
29
0.023 0.052 0.092 0.025 0.144
0.328
25
36
A Akk
15
38
0.020
45 53
0.455 0.589
60
0.013
8
<15
30
0.047
17
17
60
0.105 0.188
21 28
23 35
75
0.292
33
41
90
0.422
49
105 30
0.578 0.022 0.048 0.086
10 17 22
54 <15 17 23
75
0.134
29
31
90 105
0.194 0.263
34
38 43
120
0.344
45
0.030
0.053
45 60
3
0.077
60
4
75
0.097
90 105 120 135
<15
0.052
18
17
0.081
22
23
0.117
28
28
0.159 0.208
34
34 36
<15
5
<15
25
28 33
15 21
17 22
0.126
26
26
0.067 0.120 0.187
0.270 0.370 0.014 0.031 0.096 0.055 0.086 0.124 0.168 0.220 0.019 0.033 0.121 0.052 0.075 0.102 0.133
0.038
15
<15
0.055 0.075
19 23
16 19
0.097 0.123 0.153 0.219
30 34
23 26 29 39
0.024 0.035 0.173 0.048 0.062
180
23 26 30
11
75
150
18
21
0.006
150
135
17
0.086 0.113 0.150
0.012 0.039 0.082
0.087 0.110 0.136
120
0.061
<15 18
30 34 39
0.138
<15 <15 <15
<15
33
90
0.079 0.098 0.140
32 37
30
15
39 43 <15 <15
20
18
26 31
25 30 34
9
0.818
0.266
1.190
0.009 0.024 0.038
7 14 18
0.049 0.081
23
0.142 0.009
<15
30 11
0.020
14
0.043
16 22
<15 18
0.077
28
22
<15 18
25 31
22 27 29
0.102
33 <15 <15
0.121 0.013 0.021 0.039
23 13 15 19
26 <15 <15 15
21
16
26
21
0.051
23
17
30
24 27 31
0.069
27
19
14
<15
0.017
13
<15
17
<15 <15 18 21 23
0.026 0.033
15
21 27
19
<15 <15
0.048
24 29
17
32
31
1.823
0.074 0.111
2.145
0.058
22 25
0.067 0.106
CFM
: Air volume in cubic feet per minute.
* Supply
Ak
: Effective face area in meter Square feet per foot.
* Vertical discharge flow pattern.
Pt.
: Total pressure in inches water gauge.
* Noise Criteria values are based on(10 db) room attenuation.
Th.
: Throw in feets.
* Damper is fully open.
NC
: Noise Criteria.
* Throw values are based on terminal velocity of 75 fpm * The tested specimens were 3ft length
09
24 27
0.036
16
1.500
34 <15 <15 16 20
<15 <15
19
14 17
28
0.109
38 13
31
0.194
CONDITIONS
SYMBOLS
NC
7 8 11
15 19
0.136 0.172 0.213
105
0.031
Th
7
20 26
135
<15 18
Pt 0.010 0.023 0.041
0.008 0.030
23 29
120
9 12
At
23
0.077 0.105
0.118
<15
29
16 19
105
NC
7
23
0.170 0.022 0.034 0.147 0.049 0.067
90
Th
18
41 <15 16
75
6
48 15
0.066
1’’
0.210 0.285 0.377
0.266 0.034 0.053
60
5
40 46
15
45
2
Pt
Pt 0.036 0.081
SLOTS CMF Per Foot
1
4/5’’
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
16 18 25
SLD/RLD - SUPPLY HORIZONTAL DISCHARGE *IMPERIAL UNITS
3/5” SLOTS CFM Per Foot
Ak
15 23 30
1
2
0.014
5
17
0.109
4-7-11
26
0.195
6-10-15
36
0.305 0.438
9-15-23 14-19-29
NC
0.031
1-4-8
<15
0.070
Ak
0.020
0.195
34
0.125
7-12-19
27
49
0.280 12-17-26
39
0.179
10-15-23
31
18
0.010
3-5-8
<15
0.006
3-5-7
<15
0.040
4-10-17
16
0.026
3-9-15
<15
20
0.018
0.045
8-13-21
0.023
0.056
0.045
3-5-9
17
0.080
5-8-13
23
0.141
6-13-25
34
0.090
5-12-22
27
0.058
4-11-20
22
60
0.247
10-20-30
45
0.158
8-18-28
36
0.101
7-16-25
29
75
0.391
14-25-35
51
0.250
12-23-33
41
0.160
10-21-30
33
30
0.031
4-6-12
16
0.020
3-5-11
<15
0.013
3-5-10
<15
0.044
5-9-18
19
0.078
6-13-23
27
0.069
60
0.058
6-10-20
0.122
7-15-25
24 34
0.072
0.090
0.028
4-8-15
15
0.050
5-12-21
22 27
75
0.191 10-20-32
43
0.122
9-18-29
34
0.078
8-16-26
90
0.291
15-24-36
48
0.186
13-22-34
38
0.119
12-20-31
30
45
0.039
5-7-17
19
0.025
4-6-15
15
0.016
3-5-13
<15
6-11-19
26
0.108
7-15-24
33
90
0.156
10-20-30
105
0.211
14-25-37
60
0.053
6-8-18
21
0.034
5-7-16
17
0.022
4-6-14
<15
75
0.081
8-13-22
28
0.052
7-11-20
22
0.033
6-10-18
18
0.117
10-16-25
33
0.075
9-14-23
0.048
8-12-21
21
0.159
13-21-32
38
0.102
11-19-29
30
0.065
10-17-26
24
120
0.209 15-25-36
44
0.134
13-23-33
35
0.086
11-21-30
28
75
0.063
6-10-18
23
0.040
5-8-16
18
4-7-14
<15
0.089
8-12-23
30
0.057
7-11-20
24
0.122
10-17-27
34
0.078
9-15-24
27
0.159
11-21-33
39
0.102
10-19-30
0.130
12-23-34
75
0.069
90
0.078
0.098
105
0.118
0.203 13-25-37
0.028
4-9-16
17
0.044
5-11-20
21
31
0.064
8-16-25
25
36
0.086
10-21-31
29
0.044
5-10-18
21
0.069
6-13-22
26
39
0.100
9-18-28
45
0.135
12-23-34
0.097
0.123
0.148
43
26
0.121
0.154
0.026 0.036
6-10-18
19
0.050
8-13-21
22
31
0.065
9-17-27
25
34
0.083
11-21-31
27
0.185
SYMBOLS
NOTES
CFM
: Air volume in cubic feet per minute.
Ak
: Effective face area in meter Square feet per feet.
* The large throw values are based on the minimum terminal velocity of 50 fpm. * The middle throw values are based on the middle terminal velocity of 75 fpm. * The small throw values are based on the maximum terminal velocity of 150 fpm.
Pt.
: Total pressure in inches water gauge.
Th.
: Throw in feet.
NC
: Noise Criteria.
CONDITIONS Supply
* Horizontal Discharge flow pattern * Noise Criteria values are based on (10 db) room attenuation.
10
NC <15
43
5-11-19
120 135
* *
Th 1-3-7
21
0.016
90
*
Pt
29
0.063 0.036
1” Th
Pt
3-6-10
15
45
3-6-9
Ak
0.125 5-9-14
30
105
6
NC
1-4-8
45
60
4
Th
0.048
38
45
3
Pt
4/5”
Damper is fully open. The tested specimens were of 3ft length
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
SLD/RLD - RETURN
PERFORMANCE DATA 3/5’’ SLOTS
CFM per foot
Ps
NC
23
0.133 0.234 0.359 0.544 0.734 0.156 0.228 0.283 0.438 0.625 0.156 0.244 0.352 0.478 0.794 0.250 0.339 0.438 0.661 0.981 0.175 0.309
19 26 35 44 50 19 26 31 40 48 20 28 34 41 49 23 30 35 43 50 21 30
0.484 0.695 0.945 0.244 0.380 0.547 0.742 0.972
38 43 50 24 31 39 44 50
30
1
38 45 53 45 53 60
2
75 90 60 75
3
90 105 135 90 105 120
4
150 180 90 120
5
150 180 210 120 150
6
180 210 240
*IMPERIAL UNITS 1’’ 4/5’’ Ps NC Ps NC
0.085 0.150
15 21
0.054 0.096
0.230
28
0.147
22
0.348
35
0.233
28
0.470
40
0.301
32
0.100 0.146 0.181 0.280
15 21 25 32
0.064 0.093 0.116 0.179
<15 17 20 26
0.400 0.100
38 16
0.256 0.064
30 <15
0.156
22
0.100
18
0.225
27
0.144
22
0.306 0.508
33 39
0.196 0.325
26 31
0.160
18
0.102
<15
0.217 0.280
24 28
0.139 0.179
19 22
0.423
34
0.271
27
0.628 0.112 0.198
40 17 24
0.402 0.072 0.127
32 <15 19
0.310 0.445 0.605 0.156 0.243 0.350 0.475 0.622
30 34 40 19 25 31 35 40
0.198 0.285 0.387 0.100 0.156 0.224 0.304 0.398
SYMBOLS CFM
: Air volume in cubic feet per minute.
P/s
: Negative static pressure in inches water gauge.
NC
: Noise Criteria.
CONDITIONS * Return * Damper is full open. * Noise Criteria values are based on(10 db) room attenuation * The tested specimens were of 3ft length
11
<15 17
ALL DETAILS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE
24 27 32 15 20 25 28 32
