56 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-421 [OR])

Description

The Custom Roto-Mold 56 Gallon RV Holding Tank (Part# H-421 [OR]) is engineered to meet the demanding requirements of mobile waste and freshwater storage applications. Built with one-piece, seamless construction, this tank delivers long-term durability and resistance to cracks, chips, and ruptures—ideal for use in RVs, campers, trailers, and mobile units.

Manufactured using FDA-approved polyethylene resin that complies with FDA regulation 21 CFR 177.1520 (1) 3.1 and 3.2, the tank is safe for storing potable water and other approved liquids. Whether you're installing a new system or replacing a damaged tank, this model offers rugged reliability with compatibility across a wide range of RV configurations.

Need help planning your RV holding tank setup? Our team at Tank Superstore is ready to provide expert assistance to ensure you get the perfect solution for your application.

Key Features

• 56-Gallon Capacity: Mid-sized tank ideal for black, gray, or freshwater storage in RVs and mobile units.
• One-Piece Seamless Construction: Eliminates weak points to prevent leaks, cracks, or ruptures.
• FDA-Approved Resin: Manufactured with materials compliant with FDA 21 CFR 177.1520 (1) 3.1 and 3.2 for potable water use.
• Lightweight & Durable: Weighs only 28 lbs, making installation easy while maintaining structural integrity.
• Versatile Use: Suitable for freshwater, gray water, or black water storage depending on fittings and setup.
• Customizable Fittings (Optional): Tank can be purchased blank or with fittings added to spec upon request.
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-421 [OR]
• Capacity: 56 Gallons
• Dimensions: 65"L x 20.25"W x 17.75"H
• Weight: 28 lbs
• Material: FDA-Approved Polyethylene
• Compliance: FDA 21 CFR 177.1520 (1) 3.1 & 3.2
• Color: Varies (Natural or Black depending on availability)
• Configuration: Blank (no fittings) or customized on request
• Use Environment: Above-Ground, Mobile Installations (RV/Trailer)
• Ships From: Oregon, USA
• Liftgate Option: Available
  

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.