Return Air Filter Frame Grille - RAFF

                     
  • This model is constructed from extruded aluminium.
  • Core is hinged for easy installation and replacement of filters.
  • Core can be of fixed blade type (RA, RARB/SB, DD, SD, EC or WL).
  • All models can be furnished with powder coated white finish preceded by five stage preparation process of cleaning, phosphatising and drying.
  • Other colours are available on request.
  • Can also be supplied in natural anodize.  
  
   
TYPE RAFF: Return Air Filter Frame Grille manufactured of extruded type 50S Anodising grade aluminium. This Grille consists of a fixed outer frame and hinged inner frame with grille core. The filter media is positioned inside the outer frame behind the hinged grille section. The Grille section is held closed by hidden clips. A handle is provided for opening the grille section. The grille can be utilised without the rear mounted   filter section to provide access to Air-conditioning plant mounted above ceilings.
     
Optical Accessories OBD = Opposed Blade Damper
  PB = Plenum Box with spigots
  PC = Punched Counter Sunk Holes
Dimensions D = Over Neck Size
Frame Options 30mm Standard
  20mm  
  50mm  
Core SD Standard - Any of our Standard Blades can be used viz., DD, RA, EC, WL, SGS, SGT, or Perforated Plate. etc.
Blade Spacings   Varies per type of blade
Finish Options NA Natural Anodised
  EPC Epoxy Powder Coating
 Filter Options   6mm Washable Synthetic Media - Standard Flat Panel Filter as alternative.
     
Ordering Procedure: Example
REF QTY SIZE (WxH) TYPE ACCESS FRAME FINISH SPECIAL INSTRUCTIONS
1 6 1195 x 595 RAFF - 30 EPC "OS" 2 DOORS
 
Note: 
(1)  Dimensions given are over flange size
(2)  First dimensions given is for side on which handle is fitted. 
 
 

EXAMPLE

0.85 m3/s AT 4m/s
USE 700mm x 350mm
PRESSURE DROP IS 10n/m2
GRILLE + OBD PRESSURE DROP
IS 6n/m2 BY PIVOTING
ON LINE A-A ALTERNATIVE
DIMENSIONS ARE OBTAINED
 
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