36 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-503)

Description

The Custom Roto-Mold 36 Gallon Marine Water Tank (Part# MW-503) is designed to provide dependable potable water storage in marine vessels, RVs, trailers, and other mobile applications where compact capacity is required without sacrificing strength.

This tank is manufactured using rotational molding technology, resulting in a seamless, one-piece polyethylene construction that delivers superior durability and resistance to cracks, chips, and ruptures, even under the stress of mobile or marine use.

Made from FDA-approved polyethylene resin, the MW-503 complies with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring safe and compliant drinking water storage. It is shipped blank, meaning there are no pre-installed fittings, giving users total freedom to configure the tank for their specific plumbing needs.

Key Features

• 36-Gallon Capacity – Ideal for medium-scale fresh water storage on boats, campers, or off-grid mobile units.
• Rotationally Molded Construction – Seamless, one-piece build provides strength and long-term reliability.
• FDA-Compliant Polyethylene – Made from food-grade resin certified safe for potable water.
• Compact Yet Functional Design – Dimensions of 32" L x 21.5" W x 14.25" H allow for easy integration into tight or awkward spaces.
• Marine-Grade Durability – Resistant to UV exposure, saltwater, and road/water vibration without cracking or leaking.
• Blank Configuration – Ships without fittings for full customization of inlet, outlet, and vent placement.
• Lightweight and Sturdy – Weighs only 38 lbs, making it easy to install and relocate with minimal effort.
• Made in the USA – Proudly produced in Oregon, ensuring quality craftsmanship and material compliance.
  

Specifications

• Product Type: Marine fresh water tank
• Part Number: MW-503
• Capacity: 36 gallons
• Dimensions: 32" L x 21.5" W x 14.25" H
• Weight: 38 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 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.