Available in 4’, 5’, 6’ and 8’ widths. The conventional fume hood maintains constant air volume through sash opening. Equipped with optional Variable Air Volume Control (VAV) system that constantly monitors face velocity and adjusts to a pre-set level, ensuring sufficient air flow to meet specific requirements. Equipped with vapor proof-light and switch. All electrical components and services are UL and CSA listed. Requires a remotely located exhaust blower. Shown with optional service fixtures, plumbing & electrical, airflow monitor, worksurface, base cabinet.