[ Building glass; ] Drain pipes, not of metal; Ducts, not of metal, for ventilating and air-conditioning installations; [ Laths, not of metal; ] Water-pipes, not of metal; [ Wooden floor boards; ] Gutter pipes, not of metal; Non-metal water pipes; Sewer pipes, not of metal

'air':16 'air-condit':15 'board':31 'build':1 'condit':17 'drain':3 'duct':8 'floor':30 'glass':2 'gutter':32 'instal':18 'lath':19 'metal':7,11,22,28,36,39,46 'non':38 'non-met':37 'pipe':4,25,33,41,43 'sewer':42 'ventil':13 'water':24,40 'water-pip':23 'wooden':29

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