To provide clean air to working platform horizontally. Sturdy Duraboard construction. Elegant sun mica finish. Silent motor & blowers. Vibration free unit. Stainless steel working platform. HEPA filter efficiency 99.97% down to 0.3 micron. Pre-filter efficiency 99% down to 5 micron. UV germicidal lamp 15W/30W. Fluorescent illumination. Static pressure manometer. Cock for gas. Foldable acrylic transparent door. Plastic grill for protection of HEPA filter. Removable covers to attend motor blower filters. SIZES: 1. 60 x 60 x 60 cm 2. 90 x 60 x 60 cm 3. 180 x 60 x 60 cm