Dranjer F-R2


The Dranjer F-R2 is a special-designed floor drain valve which lets liquid drain, but prevents gases (radon, odours) and bugs from coming up. F-R2 is suitable for installation alongside a sub-slab depressurization system drawing up to 0.9 inches of water column (measured at the drain). We use this product in older homes with floor drains 8 inches or less in diameter.

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