EBB N

EnviroVent’s EBB N is a compact centrifugal extractor fan range for rooms where higher system resistance or longer duct runs defeat typical axial units. A forward‑curved impeller and sealed ball‑bearing motor deliver selectable multi‑speed performance: two speeds on the EBB‑100N and three speeds on the EBB‑170N and EBB‑250N. All versions are 100 mm duct connection, IP44 rated, and include an integral backdraught shutter. Control features include an adjustable humidity sensor (settable 60–90% RH) and a 1–30 minute over‑run timer, simplifying compliance with ventilation requirements. Surface or flush wall/ceiling installation is supported. Maximum free‑airflow across the range reaches 78 l/s (approximately 280 m³/h) on the EBB‑250N, providing strong extraction capacity for wet rooms and internal positions.