| TYPE WL |
Weather Louvre manufactured of extruded Type 50S are held in place by screws. Blades are spaced 50mm apart. |
| Standard Spacing |
Top blade fits flush with frame. Lip of Bottom Blade overlap frame. |
| Accessories |
WM |
= |
Wire Mesh |
| |
OBD |
= |
Opposed Blade Damper NOTE: Adjustment from face of Louvre is not advisable. |
| |
PC |
= |
Punched Counter Sunk Holes |
| Dimensions |
ON |
= |
Normal Duct size |
| Notes |
(1) |
Alternative Meshes available on request |
| |
(2)
|
|
For Weather Louvres smaller than 450 x 300 we recommend the use of Type RA with RARB Blade with19mm spacing. |
| Type WL: |
|
|
Weather Louvre |
| Vermin Protection: |
|
= |
Plastic Bird mesh - Standard |
| |
|
= |
Galvanised wire mesh |
| Finishing Options |
NA |
= |
Natural Anodised |
| |
EPC |
= |
Epoxy Powder Coating |
| Ordering Procedure: Example |
| REF |
QTY |
SIZE (LxH) |
TYPE |
ACCESS |
FRAME |
FINISH |
SPECIAL INSTRUCTIONS |
| 1 |
12 |
1000 x 850 |
WL |
- |
50 |
F.S. |
|
Note:
(1) Dimensions given are for ON size
(2) If code "OS" is entered under SPECIAL INSTRUCTIONS, then dimensions given are over flange
| EXAMPLE |
| Volume - 0,4m3/s |
| Velocity: 2.5m/s |
| Result: 0.16m/2 |
| OR: 400mm x 400mm |
| NR: 35 |
| PRESSURE LOSS: 30PA |
