Fabricated out of thick wooden board. these are designed so as to throw out all harmful vapors thus protecting costly instruments and the person working in the lab . outer is finished and inner epoxy painted or sunmica working table top is acid resistant an a small wash basin with connections provided for inlet outlrt of water . the unit is fitted with fluorescent light and a gas cock for gas air supply. the from facing panel is fitted with 15/5 amp . socket with switches for exhaust system and fluorescent light. to work on 220/230 volt AC.