31 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-389)

Description

The Custom Roto-Mold 31 Gallon RV Holding Tank (Part# H-389) is engineered to support a variety of mobile holding storage applications, including RVs, trailers, van conversions, and marine systems.

Constructed using a seamless rotational molding process, this tank offers superior durability and resistance to cracks, ruptures, and impact damage. It is manufactured using FDA-approved polyethylene resin, making it compliant with FDA 21 CFR 177.1520 (1) 3.1 and 3.2 for safe potable water containment.

Need help with installation or customization? The Tank Superstore team is available to help you find the ideal solution for your water or waste storage project.

Key Features

• 31-Gallon Capacity: Compact yet efficient for medium-range water or waste storage in mobile units.
• FDA-Approved Polyethylene Resin: Safe for fresh, grey, or black water use; compliant with FDA potable standards.
• Rotationally Molded, Seamless Body: Provides exceptional leak resistance and long-term structural strength.
• Slim, Mid-Low Profile: At only 9" high, it's ideal for tight installation spaces such as undercarriages and compartments.
• Blank Tank Configuration: Ships with no pre-installed fittings, offering flexibility for DIY plumbing or professional installation.
• Lightweight Construction: Weighs only 17 lbs, making it easy to handle and install.
• UV and Impact Resistant: Built for road vibration, temperature extremes, and outdoor durability.
• Natural Semi-Translucent Finish: Allows for quick water level checks without added sensors.
• Multi-Application Use: Designed for use in RVs, boats, food trucks, or portable sanitation systems.
• Made in the USA: Proudly produced in Idaho, ensuring consistent quality and reliability.
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-389
• Capacity: 31 Gallons
• Dimensions: 55.75" L x 18.75" W x 9" H
• Weight: 17 lbs
• Material: FDA-Compliant Polyethylene
• Wall Thickness: Approx. 0.25"
• Color: Natural (Translucent White)
• Fittings: Blank (No pre-installed fittings)
• Manufacturing Location: Idaho, USA
• Application: Fresh, Grey, or Black Water
  

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

If you find the 31 Gallon Custom Roto-Mold Holding Tank (H-389) at a lower price from any authorized retailer within 6 months, we’ll match the price and refund the difference.

Contact: info@tanksupplydirect.com