
Natural Smoke Exhaust Ventilator
By
Muhammad Sami
/ November 7, 2025
Natural Smoke Exhaust Ventilator, Smoke Extract Fans, Ventilation & Exhaust
Natural Smoke Exhaust Ventilator
SMOKELINE Exhaust Ventilator is a safety features
equipment with the main function of evacuating
smoke and fume inside the building during the fire
scenario, enabling the fire fighting authority to
access the focal point of the extinguishing the fire to
save life and properties. The smoke ventilator is
tested to comply with EN12101-2.
Curved Vanes Turbine Roof Ventilator
Natural Curved Vanes Turbine Roof Vent
breeztech
Detailed Specifications (by Size)
| Name | Specification | |||
|---|---|---|---|---|
| 500mm Turbo Vent (20" Dia) | 610mm Turbo Vent (24" Dia) | 715mm Turbo Vent (30" Dia) | ||
| Top Dome | Dia. | 660mm | 815mm | 980mm |
| Thickness | 0.60mm | 0.60mm | 0.60mm | |
| Material | Zinc Alum | Zinc Alum | Zinc Alum | |
| Vane | Vane Quantity | 40 pieces | 40 pieces | 40 pieces |
| Thickness | 0.60mm | 0.60mm | 0.60mm | |
| Material | Zinc Alum | Zinc Alum | Zinc Alum | |
| Vanepitch | Dia. | ⌀ 500mm | ⌀ 610mm | ⌀ 715mm |
| Height | 355mm | 385mm | 440mm | |
| Thickness | 0.60mm | 0.60mm | 0.60mm | |
| Material | Zinc Alum | Zinc Alum | Zinc Alum | |
| Surface Treatment | Zinc Alum – anti-corrosive | Zinc Alum – anti-corrosive | Zinc Alum – anti-corrosive | |
| Base Plate | Size | 650mm×925mm | 760mm×925mm | 860mm×925mm |
| Thickness | 0.60mm | 0.60mm | 0.60mm | |
| Material | Zinc Alum | Zinc Alum | Zinc Alum | |
| Upper Bracket | Thickness | 1.2mm | 1.2mm | 1.2mm |
| Material | Zinc Alum | Zinc Alum | Zinc Alum | |
| - Lower Bracket | Material | 302 Stainless Steel | 302 Stainless Steel | 302 Stainless Steel |
Bearing, Shaft, and Capacity Details (by Size)
| 500mm (20" Dia) | 610mm (24" Dia) | 715mm (30" Dia) | ||
|---|---|---|---|---|
| Upper Bearing | Material & Brand | NSK stainless steel enclosed bearing – permanently lubricating and free maintenance | NSK stainless steel enclosed bearing – permanently lubricating and free maintenance | NSK stainless steel enclosed bearing – permanently lubricating and free maintenance |
| Lower Bearing | Material & Brand | NSK stainless steel enclosed bearing – permanently lubricating and free maintenance | NSK stainless steel enclosed bearing – permanently lubricating and free maintenance | NSK stainless steel enclosed bearing – permanently lubricating and free maintenance |
| Shaft | Material | Carbon Steel | Carbon Steel | Carbon Steel |
| Surface Treatment | Color zinc-plated – anti-rust and anti-corrosive | Color zinc-plated – anti-rust and anti-corrosive | Color zinc-plated – anti-rust and anti-corrosive | |
| Net weight | 12Kg | 13Kg | 14Kg | |
| Exhaust Capacity | Wind speed 15km/h | 4495 m³/h | 6807 m³/h | 9257 m³/h |
| Wind speed 25km/h | 5757 m³/h | 8512 m³/h | 11491 m³/h | |
Technical Performance Ratings
| Attribute | Classification / Value |
|---|---|
| Resistant to Heat (Annex G) | B300 30 |
| Aerodynamic Coefficient (Annex B) | Up to 0.70 |
| Reliability (Annex C) | Re 1000 (10,000 cycles) |
| Wind Load (Annex F) | Up to 9000 N/m² |
| Resistance to fire | E by EN 13501-1 |
| U value | Up to 0.20 W/m²K |
| Low-temperature class | T(00) to T(-15) |
| Air permeability | Class 4 by EN 12207 |
| Water tightness class | 9A by EN 14963 |
| Resistance to wind load | Class 5C by EN 12210 |
| Sound Rating | 35 to 49 dB Rw |
SMOKELINE Exhaust Ventilator is a safety features
equipment with the main function of evacuating
smoke and fume inside the building during the fire
scenario, enabling the fire fighting authority to
access the focal point of the extinguishing the fire to
save life and properties. The smoke ventilator is
tested to comply with EN12101-2.










