This Terra Universal 6601-24-U WhisperFlow 2×4′ Fan Filter Unit ULPA 4′ Ductless Hood is in great condition, has been tested and is guaranteed to be fully functional. This item from a local lab that had surplus lightly used inventory. Hood is equipped with a quantity of (10) fluorescent lamps. As seen in photos, the previous owner put black material on the interior of unit. The interior workspace is approximately 48″ wide x 24″ deep x 13.5″ height. Please note that this height is to the bottom of lamps. Full interior height of hood is approximately 30″. Exterior dimensions are 49″ x 25 x 43″ (WxDxH). We urge customers to view all photos as they show overall condition, included accessories and functionality. We will be happy to provide additional information as well as photos so please feel free to contact us with any questions. Fan Filter Unit; WhisperFlow, 2’x4′, ULPA, 120 V, Powder-Coated Steel• Type: WhisperFlow• Material: Powder-Coated Steel• Filter Replacement Access: Top Side• Size: 2’x4’• Filter Frame Material: Aluminum• Filter: ULPA• Motor Type: Permanent Split capacitor (PSC)• Motor HP: 1/4 hp• Airflow: Positive Pressure