21 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-551)

Description

The Custom Roto-Mold 21 Gallon RV Holding Tank (Part# H-551) is designed to meet the performance demands of mobile liquid storage systems, making it ideal for use in RVs, trailers, campers, and mobile sanitation setups.

Built with a seamless, rotationally molded body, this tank offers outstanding durability and resistance to cracks, leaks, and structural fatigue—even in rugged environments. Manufactured from FDA-approved polyethylene resin, it meets FDA regulation 21 CFR 177.1520 (1) 3.1 and 3.2, making it a safe and reliable solution for both potable water and wastewater applications.

Whether you’re outfitting a new rig or upgrading an older system, this 21-gallon tank delivers lasting performance and installation flexibility.

Key Features

• 21-Gallon Capacity: Ideal for compact RVs, campers, and specialty trailers.
• Seamless Rotational Mold Design: Prevents leaks and withstands heavy use on the road.
• FDA-Compliant Polyethylene: Certified safe for freshwater, greywater, or blackwater.
• Compact Footprint: Space-efficient build allows installation in tight or low-clearance areas.
• Blank Tank Configuration: Ships without fittings, giving you full control over port placement.
• Lightweight & Strong: Weighs only 10 lbs, ensuring easy handling during installation.
• Made in the USA: Manufactured to rigorous quality standards using durable materials.
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-551
• Capacity: 21 Gallons
• Dimensions: 32" L x 17" W x 10.75" H
• Weight: 10 lbs
• Material: FDA-Compliant Polyethylene
• Wall Thickness: Approx. 0.25"
• Color: Natural (Translucent White)
• Fittings: Blank (No pre-installed fittings)
• Manufacturing Location: 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 21 Gallon Custom Roto-Mold Holding Tank (H-551) listed at a lower price from an authorized retailer within 6 months, we’ll match that price and refund the difference.

Contact: info@tanksupplydirect.com