220 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-556)

Description

The Custom Roto-Mold 220 Gallon Marine Water Tank (Part# MW-556) is designed to provide reliable and safe potable water storage in marine, RV, and trailer-based systems. Its extra-wide footprint and ultra-low profile make it ideal for under-deck installations, platform bases, or equipment bays with minimal vertical clearance.

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-556 complies with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring it is safe for potable water use. Weighing 167 lbs and offering 220 gallons of capacity, this tank delivers a high-capacity, rugged, and customizable water storage solution suitable for a wide range of marine and mobile applications.

Key Features

• 220-Gallon Capacity: A robust solution for large-scale 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.
• Ultra-Low Profile: Stands only 11.5" high, perfect for tight clearances and wide installation zones.
• Marine-Grade Performance: Designed to withstand vibration, UV exposure, and harsh marine conditions.
• Blank Configuration: Ships without pre-installed fittings for custom plumbing flexibility.
• Heavy-Duty Build: 167 lb weight provides excellent stability once installed.
• Made in the USA: Manufactured in Oregon under strict quality standards.
  

Specifications

• Product type: Marine fresh water tank
• Part number: MW-556
• Capacity: 220 gallons
• Dimensions: 79" L x 61.5" W x 11.5" H
• Weight: 167 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.