According to the throat's size, ridge ventilator can be divided into steel roof ridge vent and small throat smoke vent rooflight. The throat size of large throat steel roof ridge vent generally is over 1200mm. The throat size of small throat smoke vent rooflight is less 1200mm.

Common types of small throat smoke vent rooflight

The common small throat natural roof ventilation included MCW6 and MCW7 type natural ventilation system.

The characteristics of small throat ridge ventilator

1. Compared with MCW4 and MCW5 large throat natural ventilator, the overall size is smaller, and the width of the opening is generally not more than 1200mm.

2. According to the opening and closing device, it is divided into opening steel roof ridge vent and opening and closing roof skylight. The opening type ventilation skylight is usually composed of frame (sheet), outer guard plate, rainproof plate, tie rod, end sealing plate, flashing plate, edge fittings, lower end drainage groove, etc.; opening and closing ventilation skylight adds electric Valve plate, transmission mechanism, rolling door motor, etc.

3. MCW6 type ventilation skylights and MCW7 skylights are more common in the arrangement along the slope, which can be used on a single slope or across the ridge of the roof. They are common downhill roof skylights.

4. The principle of the two small throat natural ventilator is same. The MCW6 type ventilating skylight is made of a steel plate integrally pressed and formed, and the MCW7 skylight is assembled by three steel plates.

5. The small throat ventilator does not need to be installed with a ventilator base and is directly fixed on the purlin of the factory building.