57 Gallon Custom Roto-Mold RV Holding Tank (MPN: H-377 [OR])

Description

The Custom Roto-Mold 57 Gallon RV Holding Tank (Part# H-377 [OR]) is a high-capacity, low-profile solution designed to meet the demanding requirements of mobile and off-grid liquid storage applications. Whether installed in an RV, camper, food truck, boat, or tiny home, this tank provides dependable performance in fresh, grey, or black water systems.

Its seamless, one-piece construction is achieved through a rotational molding process using FDA-approved polyethylene resin, which meets the stringent requirements of FDA 21 CFR 177.1520 (1) 3.1 and 3.2. This makes the tank suitable for storing potable water as well as wastewater, offering maximum flexibility for a wide range of applications.

Durable, impact-resistant, and resistant to UV and environmental wear, the H-377 [OR] is ideal for installations where space is wide and shallow—like under RV floors or compartments with limited vertical clearance. Proudly manufactured in the USA, it supports quality, customization, and reliability at every step.

Key Features

• Seamless Rotational Molding: Built as a single unit with uniform wall thickness and no seams or joints—eliminating common failure points found in fabricated tanks.
• FDA-Compliant Polyethylene Resin: Safe for potable (drinking) water and compliant with FDA 21 CFR 177.1520 (1) 3.1 & 3.2 for food-grade applications.
• Spacious Yet Low Profile: With a large 57-gallon capacity and a height of just 7.5 inches, this tank is optimized for installation in tight, flat spaces.
• Multi-Purpose Versatility: Can be used for fresh water, grey water, or black water systems across RV, marine, commercial, and off-grid environments.
• Ships Blank for DIY Setup: Delivered without pre-drilled fittings, giving installers full control over placement using an optional DIY fitting kit.
• Built to Withstand Road and Environmental Stress: Engineered to tolerate frequent movement, temperature changes, and external impact without degrading.
• Semi-Translucent for Easy Level Monitoring: The natural white finish allows visibility of tank contents for maintenance or manual level checking.
• Made in the USA: Produced in Idaho to strict manufacturing standards for quality, precision, and longevity.
  

Specifications

• Product Type: RV Holding Tank
• Part Number: H-377 [OR]
• Capacity: 57 Gallons
• Dimensions: 50" L x 42" W x 7.5" H
• Weight: 30 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

Ships FOB from Idaho (Zip Code: 83605) and qualifies for Freight Class 250. Liftgate service available upon request for locations without a dock or forklift.

Includes a 1-Year Limited Warranty covering defects in materials and craftsmanship under normal operating conditions.

Price Match Guarantee

We’re committed to offering the best value on RV tanks. If you find the 57 Gallon Custom Roto-Mold RV Holding Tank (H-377 [OR]) at a lower price from any authorized retailer within 6 months of purchase, we’ll match the price and refund the difference.

Contact: info@tanksupplydepot.com