Plastic conduits for drainage, namely inground or buried drainage conduits containing aggregate filtering and/or load-bearing support material; Trench drains containing aggregate filtering and/or load-bearing support material made primarily of plastic; Storm drains containing aggregate filtering and/or load-bearing support material made primarily of plastic; plastic conduits for drainage, namely culverts containing aggregate filtering and/or load-bearing support material

'aggreg':12,23,38,57 'and/or':14,25,40,59 'bear':17,28,43,62 'buri':8 'conduit':2,10,51 'contain':11,22,37,56 'culvert':55 'drain':21,36 'drainag':4,9,53 'filter':13,24,39,58 'inground':6 'load':16,27,42,61 'load-bear':15,26,41,60 'made':31,46 'materi':19,30,45,64 'name':5,54 'plastic':1,34,49,50 'primarili':32,47 'storm':35 'support':18,29,44,63 'trench':20

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