Dimensional Information
Inner Diameter: 4” diameter
Width of Frame: 6.2”
Height of Frame: 6.5”
Angle: 10 degrees
Please see product images for other dimensional information.

Material Information
Frame: 316 Stainless Steel (Electropolished with Mirror Finish Applied to Outer Surfaces)
Flapper: 316 Stainless Steel (Mirror Finish on Outer Surface)
Backplate: 316 Stainless Steel (Electropolished)
Inner Seal: Black Marine Grade Silicone
Weight: 7lbs. 6 oz.

Recommended Fasteners: 2.5” 316SS #14 Flat Head (3x)

Important Product Information:

• SW1103 is intended for transom mount applications only.

• SW1103 is intended to be mounted completely above the waterline.

• SW1103 should be installed by a qualified marine technician.

• SW1103 is sold individually.

• SW1103 should be paired with a self-draining deck only.

• SW1103 should never be relied on as perfect one-way valves as scuppers may allow water to backflow.