| Features |
Model
WINDY |
Model
WINDY PLUS |
Monitor Roof/ Gravity Ventilators |
| Bearings |
Steel |
Steel |
--- |
| Dust proof Individual Bearing Housing For Protecting Sealed Bearings |
Yes |
-- |
--- |
| Completely Enclosed & Dust Proof Integrated Bearing Housing |
No |
Yes |
--- |
| Bearings Aligned with each other due to integrated housing |
No |
Yes |
--- |
| Rotation at nearly zero wind speeds due to aligned bearings |
No |
Yes |
--- |
| Static Balancing |
Yes |
Yes |
--- |
| Suitable for roof heights below 20 feet |
No |
Yes |
No |
| UV Stabilized powder coatings for longer product life |
Yes |
Yes |
Maybe |
| Suitable for dusty/smoky/sooty/oily/harsh conditions |
No |
Yes |
No |
| Special Rubberized Hardware to prevent rain ingress |
Yes |
Yes |
No |
| Exhaust capacity |
High |
High |
Verylow |
| Exhaust problem due to air back draft |
No |
No |
Yes |
| Depreciation in FY 2007 - 2008 |
80% |
80% |
10% |
| Ventilator material |
Aluminium |
Aluminium |
Aluminium / GI |
| Hardware material |
SS |
SS |
Zinc Plated |
