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The new, exclusive Watts Big Daddy RD-800 Series Dual Roof Drains provide the ultimate in dual roof drain overflow protection. The exclusive dual roof drain/overflow combinations offer outstanding leakage protection, durable construction, and ease of installation.
Big Daddy eliminates the need to cut separate holes in the roof for overflow drainage. In independent lab tests, the 10-inch outlet model achieved a 1,368 GPM flow rate, demonstrating flow rates much higher than multiple single roof drain and overflow units can deliver.
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