21 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-526)

Description

The Custom Roto-Mold 21 Gallon Marine Water Tank (Part# MW-526) is a compact, durable solution for storing potable water in marine and mobile environments. Its rectangular design allows for flexible mounting in tight spaces, making it ideal for use in boats, RVs, trailers, and off-grid installations where space is limited but reliable water access is essential.

This tank is built using rotational molding technology, resulting in a seamless, one-piece construction that offers excellent resistance to cracking, warping, and rupture. Whether exposed to constant vibration, shifting loads, or variable temperatures, the MW-526 remains structurally sound and dependable over time.

Crafted from FDA-approved polyethylene resin, the MW-526 complies with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring that your drinking water remains safe and contaminant-free. With its lightweight yet rugged construction, this tank is both easy to handle and install while offering the strength to perform in tough environments.

Key Features

• 21-Gallon Capacity: A compact and efficient solution for boats, campers, and mobile freshwater systems.
• Rotationally Molded Construction: Durable seamless design offers long-term resistance to impact, vibration, and environmental stress.
• FDA-Compliant Polyethylene: Manufactured using food-grade resin that meets federal standards for drinking water safety.
• Compact Rectangular Profile: Measures 24.5" L x 18" W x 13.25" H, perfect for tight compartments or under-seat installations.
• Marine-Grade Durability: Built to endure UV exposure, saltwater conditions, and constant motion without leaking or degrading.
• Blank Configuration: Ships without pre-installed fittings, giving full freedom to customize plumbing and connections.
• Lightweight Yet Tough: Weighs 26 lbs, making it easy to install while maintaining structural strength and performance.
• Made in the USA: Proudly manufactured in Oregon under strict quality assurance standards for consistent reliability.
  

Specifications

• Product type: Marine fresh water tank
• Part number: MW-526
• Capacity: 21 gallons
• Dimensions: 24.5" L x 18" W x 13.25" H
• Weight: 26 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

Shipping Information

• Manufacture Lead Time: 3-5 Weeks 
  
• Ships From (State): ID
  

Products are subject to freight or parcel shipping costs. Shipping charges are calculated at checkout based on delivery location, product size, weight, and carrier requirements.

Each tank is manufactured and assembled in the USA using high-quality materials and strict quality control standards—built for long-term, dependable use in demanding applications.

Warranty Information

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.