products
Manufactured from aluminium sheets in one piece.
(No joints / gaps at corners)
Easily removable Interbnal Assembly for cleaning or servicing, if necessary
Negligible resistance to air flow.
Available as 4-Way Supply and Return Diffuser.
(With or Without Opossed Blade Damper)
Less dirt accumulation.
Powder coated in attractive colours


Std. Size mm
A mm
B mm
C mm
D mm
E mm
F mm
150 X 150
131
144
290
45
137
85
225 X 225
207
220
365
45
212
85
300 X 300
278
294
440
45
285
85
375 X 375
355
369
515
45
360
85
450 X 450
430
444
595/600
45
435
85

Technical Data ( Tested by ETL Semko - USA )
Standard Size mm/inch Area factor Ak NeckArea (sq.ft)
Neck Velocity (fpm) 200 250 300 350 400 500 600 700 800
Velocity Pressure
(in w.g)		 .003 .004 .006 .008 .010 .016 .023 .031 .040
150X150
6X6		 Ak=
0.118
0.242
CFM
Pt (in w.g.)
Throw (ft.)
NC 		48
0.010
3-6
<15 		60
0.015
4-7
<15 		72
0.022
5-8
<15 		84
0.030
6-10
<15 		96
0.039
7-11
15 		120
0.061
8-12
18 		144
0.088
9-13
21 		168
0.120
10-15
26 		192
0.156
11-16
30
CFM
Pt(in w.g.)
Throw (ft.)
NC 		109
0.012
5-9
<15 		136
0.018
6-10
<15 		164
0.026
7-11
<15 		191
0.035
8-13
15 		218
0.046
9-14
17 		273
0.072
11-15
23 		327
0.104
12-17
27 		382
0.141
14-18
30 		436
0.184
15-19
35
CFM
Pt(in w.g.)
Throw (ft.)
NC 		194
0.013
7-10
<15 		242
0.021
8-11
<15 		291
0.030
9-12
<15 		339
0.041
10-14
16 		388
0.053
11-16
20 		485
0.083
13-18
27 		581
0.120
14-19
31 		678
0.163
15-20
34 		775
0.212
16-21
38
CFM
Pt(in w.g.)
Throw (ft.)
NC 		302
0.014
9-12
<15 		378
0.022
10-13
<15 		453
0.032
11-14
15 		529
0.043
12-16
18 		604
0.056
13-18
23 		755
0.088
15-20
31 		906
0.127
16-22
35 		1057
0.172
17-23
39 		1208
0.225
18-24
42
CFM
Pt(in w.g.)
Throw (ft.)
NC 		436
0.015
11-14
<15 		545
0.023
12-15
<15 		654
0.033
13-16
17 		763
0.046
15-19
21 		872
0.060
16-21
26 		1090
0.093
18-23
32 		1308
0.134
19-24
36 		1526
0.182
20-25
40 		1744
0.238
21-27
44
225X225
9X9		 Ak=
0.231
0.545
300X300
12X12		 Ak=
0.407
0.969
375X375
15X15		 Ak=
0.590
1.51
450X450
18X18		 Ak=
0.838
2.18

Throw data based on isothermal air for 100 and 50 FPM terminal Velocity
NC ( Noise Criteria ) values were determined by subtraction 10 dm from the Sound Power Level for "room effect".


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