The Todd Marine 20-gallon marine water & holding tank (85-1666WH) is a one-piece rotationally molded polyethylene tank engineered for potable water storage or waste holding aboard boats and RVs. The natural translucent white wall lets you read the liquid level at a glance — it is never opaque black.
- Capacity: 20 gallons
- Overall dimensions: 30" L × 16" W × 10" H
- Fittings: four molded-in female NPT ports on one end — two 1-1/2" and two 1/2" — shipped with threaded plugs so you open only the ports you need.
- Material & compliance: FDA CFR 177.1520 food-grade polyethylene, built to U.S. Coast Guard standards. Not for fuel.
- Color: natural translucent white (liquid level visible through the wall).
The same shell serves as a fresh-water supply tank or a waste holding tank — add the matching Todd pipe-to-hose adapter kit (water 93-2222 / 93-2223, holding 93-2220 / 93-2221). Todd requires flexible hose connectors; rigid or hard-pipe connections void the warranty. See the technical drawing for exact port layout.
