model name / number:Flood-Guard for 2" Flood Drains
size / dimensions:For 2" drain pipe
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General Specialties Flood-Guard for 2" Flood Drains (check valve) for water back-up.
GENERAL FIT ALL BACK WATER 2"
From the Manufacturer
General Pipe Cleaners Flood-Guard Prevents Basement Flooding. Flood-Guard operates like a check valve to seal off water back-up caused by overloaded sewers. Water flows normally through the drain until the sewer begins to back up. Then the Flood-Guard float rises to seal off the drain opening until the water recedes.