Supply Air Grilles - DD 
  • The two sets of individually adjustable louvres - vertical and horizontal - with or without a damper attached, allow these grilles to provide maximum flexibility of adjustments for spread and throw requirements.
  • The multi directional flexibility allows for multi-directional air supply.
  • They are recommended for high sidewall, bulkhead or duct mounting and can be used for heating, cooling, or ventilating application  

GENERAL SPECIFICATIONS
  • All models feature two sets of individually adjustable blades - vertical and horizontal - spaced at 19mm apart, and fitted into a 20, 30 or 50mm frame.
  • The optional opposed blade damper is constructed using extruded aluminium blades and frame.
  • The individual blades are secured by corrosion resistant star lock washers with added adjusting tension supplied by corrosion resistant spring wire.
  • All models can be furnished with powder coated white finish preceded by five stage preparation process of cleaning, phosphatising and drying.
  • Grilles can be supplied in natural anodised and white powder coated finishes. 
  • Other colours are available on request.
   
   
TYPE DD: Double deflection supply air grilles manufactured of extruded type 50S anodising grade aluminium with individually adjustable front vertical and rear horizontal louvres held in place by star lock washers and spring wire.
Optical Accessories OBD
=
  Opposed Blade Damper
  PC
=
  Punched counter sunk holes
  CF
=
  Concealed Fixing
Frame Options 30mm Standard    
  20mm    
  50mm    
Finish Options NA
=
  Natural Anodised
  EPC
=
  Epoxy Powder Coating
 
Ordering Procedure: Example
REF
QTY
SIZE (LxH)
TYPE
ACCESS
FRAME
FINISH
SPECIAL INSTRUCTIONS
1
7
500 X 200
DD
OBD
30
NA
CF
Note:
(1) Dimensions given are for opening size into which grille will fit (i.e Normal Duct Size)
(2)  If code "OS" is entered under SPECIAL INSTRUCTIONS, then dimensions given are over flange.