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Green Drain Seal prevents odors and pest infiltration.  It can help eliminate sewer and radon gas infiltration.   Also harmful biologic aerosols from entering the workspace.  It increases indoor air quality, protects public health.  It is really green technology and can help you in LEED certification.

It is a one way drain valve and is easy to install.  It does not impair the flow rate of water.  It does not impair plumbing maintenance.  It provides sewage backflow protection with the flapper valve.   Try it !

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