51 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-532)

Description

The Custom Roto-Mold 51 Gallon Marine Water Tank (Part# MW-532) is designed to deliver dependable potable water storage for marine and mobile applications requiring a low-profile, high-capacity solution. Its wide, flat shape is ideal for mounting under decks, in shallow compartments, or along trailer floors where vertical clearance is limited.

Manufactured using rotational molding technology, this tank features a seamless, one-piece construction that offers excellent resistance to cracking, flex fatigue, and ruptures, even in conditions with constant motion and vibration. It’s purpose-built for demanding environments like boats, RVs, and off-grid mobile systems.

Constructed from FDA-approved polyethylene resin, the MW-532 complies with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring it is safe for storing drinking water Despite its slim 8.5" height, the MW-532 holds an impressive 51 gallons and weighs just 66 lbs, making it both a high-capacity and space-saving option that delivers rugged performance without sacrificing install flexibility.

Key Features

• 51-Gallon Capacity: Ideal for large marine or mobile potable water systems.
• Rotationally Molded Construction: Seamless one-piece design resists impact and structural fatigue.
• FDA-Approved Polyethylene: Safe for potable water; meets all applicable federal standards.
• Slim Profile: Measures only 8.5" high—fits under floors, bunks, or tight-deck compartments.
• Marine-Ready Durability: Built to endure vibration, saltwater exposure, and UV radiation.
• Blank Configuration: Ships without fittings so you can fully customize plumbing connections.
• Easy to Handle: Weighs 66 lbs, balancing high volume with manageable installation.
• Made in the USA: Manufactured in Oregon to strict quality control standards.
  

Specifications

• Product type: Marine fresh water tank
• Part number: MW-532
• Capacity: 51 gallons
• Dimensions: 58" L x 31" W x 8.5" H
• Weight: 66 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.