Turbo Roof Ventilators  
Sizes: 533mm(21"), 610mm(24"), 762mm(30") & 1000mm(40") 
Commercial & Industrial Application with Industrial Base   
 
  
Features  
 
Double Protection To The Ball Bearing 
BigBird ventilators are designed with nylon dust cap (resistant to 170°) and bearing housing to protect the ball bearings against dust, which if in excess, will deter the movement of ball bearings.
All Aluminium, Anticorrosive Construction 
(Grade 5005 H34)  
Be it rain or shine, BigBird aluminium construction will remain rust-free and it requires no maintenance.
Silent Operation 
Using free wind energy, Wesflo operates quietly, making you unaware of its presence. Designed in Australia for Australian conditions.
Turns With the Slightest Breeze 
All it takes to turn your BigBird is a slight breeze. Yet, it can withstand wind velocity of 193km/h. Six shaft arms for added strength.
10mm Steel Shaft
Steel Ball Bearings Work Indefinitely 
BigBird rotates on two precision steel ball bearings which are individually sealed and 
lubricated to work for a longer life.
Eave Vent 
The eave vent will help to remove hot and trapped air from ceiling to roof, thus facilitate the operation of BigBird.
 
Specifications
 
Model
WF21
WF24
WF30
WF40
Throat size
533mm  
(21")
610mm  
(24") 
762mm  
(30")
1016mm  
(40")
No. blades
36
36
44
55
Steel bearing
2
2
2
2
Stainless steel shaft
10mm
10mm
12mm
12mm
Weight approx.
3kg
4kg
6kg
11kg
Exhaust Fan assisted
no
no
no
no