45 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-378)

Description

The Custom Roto-Mold 45 Gallon RV Holding Tank (Part# H-378) is designed to provide reliable and space-efficient liquid storage for RVs, campers, trailers, marine setups, and off-grid systems. Its ultra-low-profile design—only 5.25" high—makes it ideal for applications where vertical space is extremely limited, such as under-floor installations or within compact compartments.

Constructed through a seamless rotational molding process using FDA-approved polyethylene resin, the tank resists cracks, leaks, and structural failure even in rugged mobile environments. It complies with FDA 21 CFR 177.1520 (1) 3.1 and 3.2, making it safe for potable water, while also suitable for grey and black water storage.

Whether you’re building a custom van conversion, retrofitting an RV, or outfitting a marine or food service setup, the H-378 provides dependable, American-made quality for your storage needs.

Key Features

• Seamless Rotational Molding: One-piece construction with no seams, joints, or welds—minimizing the risk of leaks or structural failure.
• FDA-Compliant Polyethylene: Certified safe for storing drinking water under FDA 21 CFR 177.1520 guidelines.
• Ultra-Low Profile Design: At just 5.25" high, it's ideal for floor cavities, slide-outs, or builds where vertical space is limited.
• Versatile Liquid Compatibility: Suitable for fresh, grey, or black water applications—ideal for mobile, marine, and stationary uses.
• Ships Blank for Custom Configuration: Delivered without fittings to allow custom fitting placement using DIY kits.
• High Impact and Chemical Resistance: Built to endure vehicle vibration, weather changes, and exposure to waste or cleaning agents.
• Natural Semi-Translucent Finish: Allows for easy visual monitoring of fluid levels without opening the tank.
• Made in the USA: Manufactured in Idaho with strict quality control to ensure consistent, rugged performance.
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-378
• Capacity: 45 Gallons
• Dimensions: 56" L x 45" W x 5.25" H
• Weight: 31 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 Storage
  

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

We’re committed to delivering the best value. If you find the 45 Gallon Custom Roto-Mold RV Holding Tank (H-378) at a lower price from any authorized retailer within 6 months of your purchase, we’ll match the price and refund the difference.

Contact: info@tanksupplydirect.com