The Envirovent Silent Design 100mm extractor fan is an ultra-quiet axial fan designed for wall or ceiling installation in WCs and bathrooms. It features motors mounted on silent elastic blocks for minimal noise disruption. The fan is a result of extensive research and development, incorporating a patented concept to maximize airflow while minimizing sound. This model offers incredibly silent running due to its advanced component design and boasts stylish, innovative features. It is suitable for multiple applications and is available with various functions, including adjustable timers and humidity sensors. The fan operates on mains 230/240V AC 50Hz, consumes 8 watts, and has an extraction rate of 22 litres per second (80 cubic metres per hour). Its sound output is 26.5dB(A) at 3 meters, and it has an IP45 rating. The fan can be wall or ceiling mounted and includes back-draught strips. It is supplied with four interchangeable front panel trims in different colors. Dimensions: 188mm wide x 188mm tall x 50mm deep (beyond installed surface). The 99mm diameter spigot extends for 79mm and is for connection to 100mm / 4" ducting.