EnviroVent’s EBB Design 175 is a forward-curved centrifugal extractor for wet rooms where higher system resistance is expected. It mounts to a wall or ceiling and connects to standard 100 mm ducting, using a two-speed 230 V motor with an integral backdraught shutter. On high speed it delivers up to 43 l/s (approximately 155 m³/h) and carries an IP44 rating for moist environments. Options include an adjustable over-run timer (1–30 minutes) and an adjustable humidity sensor (around 60–90% RH), depending on the sub-model (S, T, HM). The compact design suits longer duct runs than typical axial fans and is suitable for air temperatures up to 40°C. Typical spigot size is about 98 mm to fit 100 mm ducting.

