21 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-555)

Description

The Custom Roto-Mold 21 Gallon Marine Water Tank (Part# MW-555) is designed to provide reliable and safe potable water storage in marine, RV, and trailer-based systems. Its slim profile and compact footprint make it ideal for tight compartments, under-seat storage, or low-clearance installations where space efficiency is critical.

Built using rotational molding technology, this tank features a seamless, one-piece construction that enhances resistance to cracking, impact damage, and long-term wear, even in mobile environments subject to movement and vibration.

Manufactured from FDA-approved polyethylene resin, the MW-555 complies with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring it is safe for potable water use.

Key Features

• 21-Gallon Capacity: A compact solution for smaller marine or off-grid potable water needs.
• Rotationally Molded Construction: Seamless and impact-resistant for maximum durability.
• FDA-Compliant Polyethylene: Made with food-grade resin safe for drinking water.
• Slim Profile: Stands only 10" high, making it ideal for tight vertical clearances and compact spaces.
• Marine-Grade Performance: Designed to withstand vibration, UV exposure, and harsh marine conditions.
• Blank Configuration: Ships without pre-installed fittings for custom plumbing flexibility.
• Lightweight Design: 34 lb weight allows for easy handling and stable installation.
• Made in the USA: Manufactured in Oregon under strict quality standards.
  

Specifications

• Product type: Marine fresh water tank
• Part number: MW-555
• Capacity: 21 gallons
• Dimensions: 48" L x 14" W x 10" H
• Weight: 34 lbs
• Material: FDA-compliant polyethylene
• Wall thickness: 0.25"
• Color: Natural (Translucent white)
• Fittings: Blank (no pre-installed fittings)
• Manufacturing location: Oregon, USA
• Application: Potable water (Marine use)
  

Shipping & Warranty

Manufacture Lead Time: 3-5 Weeks

Ships FOB from Idaho (Zip Code: 83605), Freight Class 250. Liftgate service is available upon request for residential or limited-access delivery locations.

Custom Roto-Molding tanks are covered by a 5-year manufacturer warranty from the date of original purchase against defects in material and workmanship. Coverage applies to tanks that are correctly installed and have not been subjected to abuse or misuse, and is for the benefit of the original end user. The warranty does not cover misuse, fire, accident, negligence, transit damage, unauthorized modifications, excessive external pressure, abnormal use, product loss through leakage, or related injury/property damage. Manufacturer liability is limited to repair or, at its option, replacement of a qualifying defective product, subject to written notice within the warranty period and return of the item to the point of manufacture with transportation prepaid.

For warranty details or to initiate a warranty claim, please contact Tank Supply Direct at info@tanksupplydirect.com.