Pressure Actuated Fills (PAF) Manholes – Cover Page & Part # Code
Weld Collars & Gaskets – Clamp-Ring Style
Model PAF450, 20″ Offset Manhole, Non-DOT Pressure Relief Device
Model PAF450, 20″ Manhole, Non-DOT Pressure Relief Device
Model PAF450, 16″ Offset Manhole, Non-DOT Pressure Relief Device
Model PAF450, 16″ Manhole, Non-DOT Pressure Relief Device
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