55 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-479)

Description

The Custom Roto-Mold 55 Gallon Marine Water Tank (Part# MW-479) is expertly designed to meet the potable water storage needs of marine, RV, and mobile environments. Its low-profile, wide-body design makes it an excellent fit for shallow or deck-mounted installations where vertical space is at a premium.

This tank is manufactured using rotational molding technology, producing a seamless, one-piece polyethylene body that offers superior resistance to cracks, leaks, and impact damage. It is built from FDA-approved polyethylene resin, fully compliant with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, making it a safe and reliable solution for storing drinking water.

Whether you're retrofitting a yacht, outfitting a van conversion, or building a custom off-grid system, this tank offers performance, safety, and adaptability in one reliable package.

Key Features

• 55-Gallon Capacity. Perfect for medium to large freshwater storage requirements in boats and RVs.
• Rotationally Molded Design. Seamless, impact-resistant construction enhances structural strength.
• FDA-Compliant Resin. Manufactured from food-grade polyethylene for safe potable water use.
• Low-Profile Footprint. Measures 50" L x 44" W x 6" H—ideal for deck, under-seat, or low-clearance installs.
• Blank Configuration. No fittings pre-installed—flexible layout options for custom plumbing.
• UV-Stabilized & Marine-Ready. Built to withstand sunlight, vibration, and saltwater exposure.
• Natural Translucent Color. Enables easy visual monitoring of internal water level.
• Made in the USA. Precision-molded in Oregon with consistent quality control.
• Lightweight & Maneuverable. Weighs 71 lbs for its size and capacity.
  

Specifications

• Product Type: Marine fresh water tank
• Part Number: MW-479
• Capacity: 55 gallons
• Dimensions: 50" L x 44" W x 6" H
• Weight: 71 lbs
• Material: FDA-compliant polyethylene
• Wall Thickness: Approx. 0.25"
• Color: Natural (translucent white)
• Fittings: Blank (no pre-installed fittings)
• Manufacturing Location: Oregon, USA
• Application: Potable water (marine, RV, off-grid, mobile)
  

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.