SW1109 is our best selling scupper. The unique seal design of SW1109 outperforms the flat rubber flapper design commonly found on boats. Please check out our demo videos to see it in action!

SW1109 is for transom mounting only only unless paired with SW1122 (Deflector for Starboard or Port Mounted Scuppers).

Dimensions
Outer Diameter 3.125”
Inner Diameter (Thru-Hole): 1.625”
Screw Pattern Diameter: 2.31”

Material Information
Frame: 316 Stainless Steel (mirror-polished)
Flapper: Black Marine Grade Elastomer
Inner Seal: Black Marine Grade Elastomer

Important Product Information:

• SW1109 should be installed by a qualified marine technician.

• Do not overtighten screws when installing as seal may deform. Only use hand-tools during installation. Sealant should be used to seal screws and to prevent screw backout

• SW1109 should only be installed on the transom only unless paired with SW1122 (Deflector for Starboard or Port Mounted Scuppers)

• SW1109 is sold individually.

• SW1109 should be paired with a self-draining deck only.

• SW1109 should never be relied on as perfect one-way valves as scuppers may allow water to backflow

• SW1109 requires(4) #6 316 stainless steel screws (sold separately)