вентилятор отрицательного давления

FAB Series Standard Square Ventilation Fan * The FAB series square ventilation fan features an energy-saving, low-noise impeller design and a high-strength steel casing with anti-rust spray treatment. * The fan is equipped with external louvers for excellent rainproof performance, making it suitable ...

WF Square Wall Fan Highlights: Square casing design makes it easier to install the fan to concrete wall, brick wall or light steel pressed wallboard. The square rain cover is firm in construction and nice in appear ance. the fan is mainly used for ventilation in workshop and commercial construction ...

JS Square Fan Highlights: This exhaust fan is featured by low noise, electricity saving, large air flow. It is easy installation, which is an ideal choice for sunstroke prevention. This ventilation in many occasions such as various warehouses, offices,flower, greenhouses & poultry houses. The motor ...