75 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-647)

Description

The Custom Roto-Mold 75 Gallon RV Holding Tank (Part# H-647) is engineered to provide reliable, high-capacity fluid storage for RVs, trailers, mobile restroom units, and off-grid systems. Its low-profile, wide-body design makes it an excellent choice for mounting in undercarriages or shallow compartments where vertical space is limited.

Manufactured using rotational molding technology, the tank features a seamless, one-piece polyethylene body that resists leaks, cracks, and structural fatigue. Made with FDA-approved resin, it complies with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring safe use for potable water, greywater, or blackwater storage.

Whether you’re building out a new system or retrofitting an existing one, the Tank Superstore team is ready to support your project with expert guidance.

Key Features

• 75-Gallon Capacity: High-volume tank ideal for large RVs, mobile restrooms, or extended boondocking.
• Rotationally Molded Construction: One-piece design maximizes strength and prevents leaks.
• FDA-Compliant Resin: Safe for use with potable water, wastewater, or sewage.
• Low-Profile Footprint: Just 8" tall—perfect for tight or shallow spaces.
• Durable & UV-Resistant: Withstands road vibration, impact, and harsh weather.
• Blank Tank Design: Ships without fittings to allow full customization.
• Rugged Yet Lightweight: Weighs 37 lbs for easy installation and secure mounting.
• Made in the USA: Proudly manufactured in Oregon under strict quality control.
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-647
• Capacity: 75 Gallons
• Dimensions: 68" L x 40" W x 8" H
• Weight: 37 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, Greywater, or Blackwater
  

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.