Class II, Type A2 6 foot biological safety cabinet. Brushless DC motor technology for improved energy efficiency and performance. SmartClean window cleaning position. SmartPort for clean and easy organization. Negative pressure dual-side wall. Meets NSF/ANSI Standard 49. Stainless steel chamber. Dimensions: 31.5 x 74.8 x 61.8 (LxWxH). Window Opening: 10 in.