SS 304 Water tap raw water FRP layer dust mist NSIC REGD sash track prime work fume closet nitrogen gas CE CERTIFIED fume removal fume exhaust similar names fume cupboard chemical fumes desired height important part solvent mixing nuisance doors direct contact granite marble hazardous fumes important tasks drainage system different types service fixture EXTERNAL SURFACE core application CHEMICAL STORAGE Standard fittings volatile organics electrical points Harrier Fume Hood ventilated cabinet electrical sockets surrounding people Chemical fume hood dry service valves direct drive motor heavy duty blowers flammable chemicals working environment inner chamber walls air borne particles brass needle valves low door thresholds ELECTRICAL UTILITIES contamination source laboratory fume hood Stainless Steel Work stainless-steel sheet Inner working chamber laboratory environment FUME HOOD APPLICATIONS acceptable air quality Fluorescent tube light glass window mechanism fume ventilation system Inner Working Dimension marble stone work bench Technical Specifications Centrifugal exhaust blower centrifugal blower assemble Jet black granite Illumination