| Options | Without valve |
|---|---|
| Brand | Unbranded |
Check the listing for details. Backflow Preventer Convenient DIY Installation Long-Term Stable Operation. Condition: New. Listed at 12.34 USD. Strong for protection: specially designed for ventilation systems such as bathrooms and kitchens, effectively blocking cold air backflow, noise backflow. Convenient installation: no professional tools required, DIY can be easily done, and installation can be completed quickly.
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