This fume hood is the same as H50000-0003, shown above, but includes a flat internal baffle across the rear of the shell.Internal baffle across the rear of the shell slopes forward, leaving space beneath for air flow to sweep the deck, and space above in order to efficiently remove airborne vaporsSash can be set in an open, closed or intermediate position; remains open slightly when in closed position to facilitate continuous air flowStack O.D.: 15 cm (6")Exhaust system capable of drawing 350 cfm (free air) is recommendedShipping weight 25.5 kg (56 lbs)Note: Overall dimensions are 107 x 51 x 76cmH (42 x 20 x 30").