165 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-538)

Description

The Custom Roto-Mold 165 Gallon Marine Water Tank (Part# MW-538) is engineered to provide high-volume potable water storage for marine and mobile applications where both capacity and durability are critical. Its rectangular shape and relatively low 16.5" height allow for efficient space utilization in larger vessels, RVs, trailers, or off-grid systems.

Using rotational molding technology, the MW-538 is crafted with a seamless, one-piece body that eliminates weak points and significantly reduces the risk of cracks, leaks, or deformation. It’s purpose-built for high-motion environments, offering outstanding structural integrity and long-term reliability.

Manufactured from FDA-approved polyethylene resin, this tank meets FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, making it fully compliant for safe potable water storage. The tank ships blank, giving you complete flexibility to install fittings where they best suit your system’s design.

Key Features

• 165-Gallon Capacity: Delivers extended freshwater supply for marine and mobile use.
• Rotationally Molded Construction: Seamless body prevents cracks, weak spots, and stress damage.
• FDA-Compliant Material: Approved for storing drinking water under federal regulations.
• Space-Efficient Design: At just 16.5" tall, fits into large compartments with modest vertical clearance.
• Marine-Ready Strength: Resistant to UV rays, saltwater exposure, and vibration fatigue.
• Blank Tank Configuration: Ships without fittings to allow full customization of inlets and outlets.
• Heavy-Duty Performance: Weighs 112 lbs—stable during transport, strong in use.
• Made in the USA: Proudly produced in Oregon under strict quality control standards.
  

Specifications

• Product type: Marine fresh water tank
• Part number: MW-538
• Capacity: 165 gallons
• Dimensions: 68" L x 38" W x 16.5" H
• Weight: 112 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.