The FBR – Fixed Blade Return Grille is suitable for extract/return air in sidewall applications. They are complete with 45° blades pitched 60% free area. Standard flanges are 32mm although 19mm are available with alignment joints to give a continuous appearance.
Available with Opposed Blade Dampers, Plenum Boxes and Plaster Frame.
FBR Grilles are manufactured from extruded aluminium sections, the mitred corners being fully welded and linished.
Standard finish is RAL9010 or polyester powder coated to the customers colour requirement. Full ordering specifications and example Fixed Blade Return Grille ordering code below.
|FIXED BLADE RETURN GRILLE (DIFFUSER)|
|Example: FBR/F/S/F1/3/Nominal Opening Size|
|Core||F - Fixed Core
R - Removable Core
|Frame||S - 32mm Frame (std)
N -19mm Frame
PF - Plaster Frame
JF - Joinery Frame
|Access||OB - Opposed Blade Damper
0 - Not Applicable
|Fixing||F0 - No fi xings
F1 - CSK Flange Fixing Holes
F2 - Spring Clip
F4 - Rear Strap
F5 - Rear Strap & Bracket
F6 - Goal Post Bracket
|Finish||1 - (Mill Finish)
2 - RAL9006 (Silver/Grey)
3 - RAL9010 (White)
4 - RAL9005 (Black)
5 - RAL9003 (White)
6 - RAL9016 (White),
7 - Other RAL/BS Code (additional costs may apply)
8 - Chrome Finish - Powder Coated
|Notes||Fixed Blade Return Grilles can also be
various grades of Stainless Steel, please
contact Sales Office.
Plenum boxes are accessories for use with Grilles and Diffusers. They are designed to equalise the pressure profile within the box and hence provide an even velocity at the face of the Grille or Diffuser without the use of Equalising Grids.
|FIXED BLADE RETURN GRILLE PLENUM|
|Example: PBL/FBR/CS/Nominal Size/Spigot Size|
|Type||PBU - Un-Lined Side
PBL - Lined Side
PBA - Adaptor Top
|Mesh||P - Perforated Equalising Mesh
0 - No Equalising Mesh
|Damper||LS - Lever Spigot Damper
CS - Cord Spigot Damper
0 - No Damper
|Spigot||OP - 2 Opposite Spigots
AD - 2 Adjacent Spigots
FL - Flat Oval Spigot
|Finish||IN - Black Internal
EX - Black External
IE - Black Internal & External