Your Air Movement Specialists. Ventair has been a leading specialist supplier of high quality air movement products in Australia since 2006, for both domestic and commercial markets. The success of Ventair is driven by their strong philosophy for innovation and understanding the needs of their customers. Because of this, Ventair has successfully engineered an aesthetically pleasing yet high performing product range. Some of Ventair’s most well-known products include their bathroom exhaust fans – available now at Cass Brothers online or in store today.