Return Air Grilles - RASB 

 
   
TYPE RASB: Return Air or Discharge Grille with ribbed or un-ribbed blades manufactured of extruded type 50S anodising grade aluminium with fixed horizontal blades.
   
TYPE RASB: Grille can be used internally or externally and is particularly well suited for console air conditioning units.
   
Optical Accessories OMD = Opposed Blade Damper
  WM = Wire Mesh
  PC = Punched Counter Sunk Holes
  FS = Rear Fixing Straps
Dimensions D = Over Neck Size
Frame Options 30mm = Standard
  20mm  
  50mm  
Finish Options NA = Natural Anodised
  EPC = Epoxy Powder Coating
Blade Spacings 13mm  = Standard
  19mm  
     
Ordering Procedure: Example
REF QTY SIZE (WxH) TYPE ACCESS FRAME FINISH SPECIAL INSTRUCTIONS
1 15 755 x405 RASB - 30 NA OVER NECK (ON)
 
Note:
(1)  Dimensions given are for over neck size
(2)  If code "OS" is entered under SPECIAL INSTRUCTIONS, then dimensions given are over flange.
(3)  If 13mm, 19m Blade Spacing required, enter under SPECIAL INSTRUCTIONS
 
 

EXAMPLE

0,85m3/s AT 4M/S
USE 700mm x 350mm
PRESSURE DROP IS 10N/m2
GRILLE + OBD PRESSURE DROP 
IS 6N/m2 BY PIVOTING
ONLINE A-A ALTERNATIVE
DIMENSIONS ARE OBTAINED.
 
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