Skip to product information

Custom Roto-Molding

21 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-320)

21 Gallon Custom Roto-Mold Marine Water Tank (MPN: MW-320)

SKU: MW-320

Regular price
Price: $200.00
Regular price
List Price:
Sale price
Price: $200.00
View Cart

Description

The Custom Roto-Mold 21 Gallon Marine Water Tank (Part# MW-320) is engineered for potable water storage in compact marine and mobile applications. Its cube-like form factor makes it an excellent choice for tight installations in boats, campers, trailers, or small utility vehicles where every inch of space counts.

Manufactured using rotational molding technology, this tank features a seamless, one-piece design that delivers exceptional resistance to cracks, chips, and leaks—ensuring dependable service in harsh or mobile environments.

Made from FDA-approved polyethylene resin, the MW-320 complies with FDA Regulation 21 CFR 177.1520 (1) 3.1 and 3.2, ensuring its safety for storing drinking water. The tank ships blank, allowing total freedom to install fittings wherever your application demands.

Key Features
  • 21-Gallon Capacity: Ideal for small-scale potable water storage in boats, vans, or other mobile setups.
  • Rotationally Molded Construction: Seamless and durable one-piece design built to resist vibration and impact damage.
  • FDA-Compliant Polyethylene: Manufactured from food-grade resin certified safe for potable water under federal regulations.
  • Compact Square Profile: Measures 21" L x 21" W x 12.5" H—fits easily into storage lockers, compartments, or under seating.
  • Marine-Grade Durability: Withstands exposure to saltwater, UV rays, and movement-related stress in tough environments.
  • Blank Configuration: Ships without any pre-installed fittings, providing full flexibility for custom plumbing needs.
  • Lightweight Build: Weighs just 25 lbs, making it easy to lift, carry, and position without assistance.
  • Natural Translucent Color: Semi-clear walls allow for convenient visual inspection of water levels.
  • Made in the USA: Precision-manufactured in Oregon to meet strict quality control standards.
Specifications
  • Product type: Marine fresh water tank
  • Part number: MW-320
  • Capacity: 21 gallons
  • Dimensions: 21" L x 21" W x 12.5" H
  • Weight: 25 lbs
  • Material: FDA-compliant polyethylene
  • Wall thickness: Approx. 0.25"
  • Color: Natural (Translucent white)
  • Fittings: Blank (no pre-installed fittings)
  • Manufacturing location: Oregon, USA
  • Application: Potable water (Marine use)
Shipping & Warranty

Ships FOB from Idaho (Zip Code: 83605), Freight Class 250. Liftgate service is available upon request for residential or limited-access delivery locations.

Covered by a 1-Year Limited Warranty against defects in materials and workmanship under normal use conditions.

Price Match Guarantee

If you find the 21 Gallon Custom Roto-Mold Marine Water Tank (MW-320) at a lower price from an authorized competitor within 6 months, we’ll match it and refund the difference.

Contact: info@tanksupplydirect.com


Recently Viewed Products