21 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-454)

Description

The Custom Roto-Mold 21 Gallon RV Holding Tank (Part# H-454) is designed to provide reliable liquid storage for RVs, travel trailers, and mobile systems requiring a long, slim profile. Its extended length and low height make it suitable for under-chassis mounting or narrow installation zones.

Constructed using a rotationally molded, seamless one-piece design, this tank is highly durable—resistant to cracking, impact, and UV damage. It is manufactured from FDA-approved polyethylene resin, compliant with FDA regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring safety for potable water or wastewater use.

Whether you're replacing an existing unit or installing a fresh system, this tank is a practical solution for compact, mobile liquid storage.

Key Features

• 21-Gallon Capacity: Ideal for compact RVs, campers, or marine applications.
• Seamless Rotational Molded Construction: No seams means fewer weak points and less risk of leaks.
• FDA-Approved Resin: Safe for storing potable water or grey/black waste.
• Ultra-Slim Design: Measures just 7.625" high—perfect for low-clearance installations.
• Extended Length: 94.875" long design for specific underframe or narrow cavity use.
• Lightweight Build: Weighs just 17 lbs for ease of handling and mounting.
• Blank Configuration: Ships without pre-installed fittings—ready for custom layout.
• Made in the USA: Manufactured in Idaho to rigorous quality standards.
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-454
• Capacity: 21 Gallons
• Dimensions: 94.875" L x 17" W x 7.625" 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: 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.