Non-metallic hatches, namely, attic hatches, floodgate hatches, watertight hatches, fire-rated hatches, airtight hatches, roof and floor hatches; Non-metallic doors, namely, utility doors, access doors, fire-rated access doors, insulated duct access doors, security doors

'access':29,34,38 'airtight':16 'attic':6 'door':25,28,30,35,39,41 'duct':37 'fire':13,32 'fire-r':12,31 'floodgat':8 'floor':20 'hatch':4,7,9,11,15,17,21 'insul':36 'metal':3,24 'name':5,26 'non':2,23 'non-metal':1,22 'rate':14,33 'roof':18 'secur':40 'util':27 'watertight':10

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