300 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-476)

Description

The Custom Roto-Mold 300 Gallon Marine Water Tank (Part# MW-476) is a high-capacity potable water storage solution designed for marine, RV, trailer, and off-grid applications. With its large volume and durable construction, it’s ideal for extended freshwater supply in demanding mobile or remote environments.

Manufactured using a rotational molding process, this tank features a seamless, one-piece body that ensures long-term structural integrity. It’s crafted from FDA-approved polyethylene resin, compliant with FDA regulation 21 CFR 177.1520 (1) 3.1 and 3.2, making it safe for storing potable drinking water for human use.

The MW-476 is designed with a long rectangular footprint (96" x 30") and a 24" height, which allows for installation in a wide range of horizontal storage configurations, including underneath decks, in trailers, or mounted in service vehicles.

Key Features

• 300-Gallon Capacity. Offers extended potable water supply for marine and mobile installations.
• One-Piece Rotomolded Construction. Seamless design resists cracking, splitting, and structural failure.
• FDA-Compliant Polyethylene. Safe for drinking water—built with certified food-grade resin.
• Optimized Dimensions. Measures 96" L x 30" W x 24" H—ideal for horizontal storage in tight or flat compartments.
• Blank Configuration. Ships with no fittings installed for complete plumbing customization.
• Engineered for Harsh Use. Performs reliably in marine, trailer, RV, and off-grid conditions.
• Natural Translucent Color. Allows easy visual inspection of water levels.
• Proudly Made in the USA. Manufactured in Oregon to high-quality production standards.
• Relatively Lightweight for Size. Weighs 152 lbs, easy to move with proper handling equipment.
  

Specifications

• Product Type: Marine fresh water tank
• Part Number: MW-476
• Capacity: 300 gallons
• Dimensions: 96" L x 30" W x 24" H
• Weight: 152 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, trailer, RV, off-grid)
  

Shipping & Warranty

Shipping Information

• Manufacture Lead Time: 4-5 Week Lead Time 
  
• 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

Warranty coverage varies by manufacturer and product type. For warranty details or to initiate a warranty claim, please contact Tank Supply Direct at info@tanksupplydirect.com.

Price Match Guarantee

Find the MW-476 300 Gallon Marine Water Tank offered at a lower price by an authorized seller? We’ll match the price and refund the difference within 6 months of your purchase.

Contact: info@tanksupplydirect.com