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CDR

Circular ceiling diffuser for supply air - Flat upper section
  • Spread pattern can be shielded
  • Can be used with the ALS commissioning box
  • Cleanable
  • Adjustable slot
  • Perforated diffuser face = CDD
  • Imperforated diffuser face = CDR
  • Standard colour White RAL 9003
    • 5 alternative standard colours
    • Other colours upon request

Technical specifications

AIR FLOW - SOUND PRESSURE ROOM (Lp10A) *)

CDD (CDR)                 l/s  
 Size  25 dB(A)30 dB(A)35 dB(A)
100  33 (24) 37 (28) 44 (34)
125  44 (32) 49 (37) 56 (44)
160  70 (61) 82 (71) 95 (81)
200  95 (80) 110 (91) 120 (105)
250  115 (100) 135 (120) 160 (140)
315  150 (140) 180 (165) 210 (190)
CDD (CDR)ALS l/s 
SizeSize25 dB(A)30 dB(A)35 dB(A)
100 80-100 20 (21) 26 (27) 32 (32)
125 100-125 27 (26) 35 (33) 43 (41)
160 125-160 46 (46) 57 (58) 70 (72)
200 160-200 68 (69) 82 (82) 100 (100)
250 200-250 92 (90) 120 (110) 140 (140)
315 250-315 135 (140) 160 (155) 190 (190)

Data applies to 360° spread pattern. Data for CDD in combination with ALS commissioning box is stated for a total pressure drop of 50 Pa. Values in brackets apply to CDR.

*) Lp10A = Sound pressure incl. A-filter with 4 dB room attenuation and 10 m2 room absorption area.

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