Single Deflection Grille

Type SDO & Type SDOV

Single deflection aluminium grilles manufactured with aerofoil section blades recommended for use on sidewall supply or extract for conditioned or treated areas in shops, schools, changing rooms, offices etc.

The units are suitable for air handling capacities up to 10 air changes per hour dependant on ceiling height and temperature differentials. The blades can be adjusted through 45° up or down providing a controlled discharge of conditioned air.

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SDO-DDO Selection Data

Air Volume m3/sec	Spigot Velocity m/sec	Grille Size width x height	Throw m	Pressure Drop n/m2	Sound Rating nc
0.5	1.4 1.66 1.66	350x100 300x100 200x150	2.5-4.0 3.5-5.5 3.7-5.7	2 3 3	- - -
0.075	1.25 1.87 1.66 2.5	600x100 400x100 300x150 200x150	3.0-5.0 3.8-5.3 4.0-5.6 6.0-7.5	2 5 4 6	- - - 20
0.10	1.33 1.60 1.66 2.22	600x125 500x125 400x150 300x150	3.7-5.0 4.5-5.5 5.2-7.0 5.6-7.6	2 4 4 6	- - - 16
0.125	1.38 1.66 2.08 2.50 2.77 3.33	600x150 600x125 400x150 400x125 300x150 300x125	4.3-6.0 5.0-6.8 5.5-7.5 6.1-8.6 7.5-10.0 8.5-11.4	2 3 4 6 9 12	- - 20 20 28 35
0.150	1.5 2 2.14 2.5 2.85 3.33	500x200 500x150 350x200 300x200 350x150 300x150	5.5-7.5 6.6-8.6 8.0-10.5 8.3-10.8 8.5-12.5 9.1-13.1	2 4 5 7 10 12	- - 20 25 28 35
0.20	2 2.66 2.5 3.33 3.33 4.44	500x200 500x150 400x200 400x150 300x200 300x150	8.0-11.0 9.3-12.6 9.5-13.0 11.2-14.5 12.0-16.0 13.5-17.2	5 7 7 11 12 22	20 23 25 26 35 39
0.25	1.8 2.38 2.08 2.77 2.5 3.33	700x200 700x150 600x200 600x150 500x200 500x150	8.5-11.5 8.9-11.8 9.0-12.0 9.7-12.7 10.0-13.0 11.3-14.3	4 5 5 7 7 11	- 20 20 25 25 36
0.30	1.8 2.50 2.2 2.5 3 3.75	800x200 800x150 700x200 600x200 500x200 400x200	7.5-10.5 8.8-12.3 9.0-12.5 10.5-14.5 11.0-15.0 12.0-16.5	4 7 6 8 12 17	- 21 22 25 30 35
0.40	2 2.22 3 3.8	700x300 600x300 450x300 350x300	10.0-14.0 11.1-14.1 14.5-18.0 17.0-25.0	3 6 8 14	- 25 27 36
0.50	2 2.77 3.33 4.16	850x300 600x300 500x300 400x300	11.0-15.0 12.1-16.0 13.0-17.5 17.0-23.0	4 4 5 10	20 24 25 33

Specification & Construction

SDOV are manufactured with single rows of individually adjustable horizontal or vertical blades as specified from HE9TF aluminium with mitred corners.