51 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-655)

Description

The Custom Roto-Mold 51 Gallon RV Holding Tank (Part# H-655) is engineered to meet the demands of RVs, trailers, and mobile sanitation systems requiring high-capacity holding solutions. Its long, narrow profile makes it ideal for installation in underbelly compartments or other elongated mounting areas.

Constructed using rotationally molded, FDA-compliant polyethylene, this tank features a seamless one-piece design that offers outstanding resistance to cracks, chips, and ruptures. The resin used meets FDA regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring safe storage of potable water, greywater, or blackwater.

Whether you're upgrading an RV or outfitting a custom mobile system, the Tank Superstore team is here to guide you through selecting the ideal tank for your application.

Key Features

• 51-Gallon Capacity: Suited for larger RV holding needs or extended off-grid use
• Rotationally Molded Construction: Seamless design prevents leaks and enhances strength
• FDA-Compliant Resin: Safe for potable water and meets 21 CFR 177.1520 (1) 3.1 and 3.2 standards
• Elongated Profile: Ideal for narrow installation zones or under-frame mounting
• Blank or DIY Kit Options: Ships without fittings or with a kit for user-installed customization
• UV-Resistant & Chemical-Resistant: Durable in harsh outdoor environments
• Made in the USA: Precision-molded in Oregon for consistent quality
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-655
• Capacity: 51 Gallons
• Dimensions: 87" L x 23.6875" W x 15.5625" H
• Weight: 31 lbs
• Material: FDA-Compliant Polyethylene
• Wall Thickness: Approx. 0.25"
• Color: Natural (Translucent White)
• Fittings: Blank or Blank with DIY Fitting Kit
• Manufacturing Location: Oregon, USA
• Applications: Fresh 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.