37 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-478)

Description

The Custom Roto-Mold 37 Gallon Marine Water Tank (Part# MW-478) is purpose-built to deliver reliable, compact potable water storage for a variety of mobile and marine applications. Its low-profile design is ideal for shallow compartments, under-bench installations, or deck-mounted layouts in boats, RVs, and expedition vehicles.

Crafted using rotational molding technology, this tank features a seamless one-piece polyethylene construction that enhances long-term durability and minimizes the risk of leaks, cracks, or structural failures. The tank is constructed with FDA-approved polyethylene resin and is compliant with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, making it suitable for safe potable water storage.

Key Features

• 37-Gallon Capacity. Ideal for mid-sized potable water systems in marine and RV settings.
• Seamless Rotational Molded Body. One-piece tank design resists cracking, splitting, and leaks.
• FDA-Approved Resin. Safe for storing potable water; compliant with FDA 21 CFR 177.1520.
• Space-Saving Dimensions. Measures 55" L x 24" W x 7" H—great for low-clearance installations.
• Blank Tank Configuration. Ships without pre-drilled or installed fittings for full installation flexibility.
• Marine-Grade Durability. UV-stabilized and resilient to saltwater exposure and vibration.
• Translucent Natural Color. Allows easy visual monitoring of water levels.
• USA-Made. Proudly manufactured in Oregon with high quality standards.
• Lightweight & Easy to Handle. Weighs only 49 lbs for its storage capacity.
  

Specifications

• Product Type: Marine fresh water tank
• Part Number: MW-478
• Capacity: 37 gallons
• Dimensions: 55" L x 24" W x 7" H
• Weight: 49 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.