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AIR-ONLY BOAT VENTILATORS - LET AIR IN AND
KEEP WATER OUT VIA THE USE OF SPHERICAL FLOATS.
Salt of our products is Air-Only vent.
Look at pictures below how it works.
The Air-Only vents use PVC balls, which float within the
vent as soon as there is water on deck, along vertical
guides, to form a watertight seal. As soon as the water
subsides, the balls descend, letting air in again.
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