---
product_id: 188582967
title: "classAcustoms | RV Fresh and Gray Water Tank | Combo Pack (21 Gallon & 25 Gallon) | RV Water Holding Tanks"
brand: "classacustoms"
price: "S$720"
currency: SGD
in_stock: true
reviews_count: 3
category: "Class Acustoms"
url: https://www.desertcart.sg/products/188582967-classacustoms-rv-fresh-and-gray-water-tank-combo-pack-21
store_origin: SG
region: Singapore
---

# 21 & 25 Gallon Capacity UV-8 Stabilized MDPE Resin NSF/ANSI Std 61 Certified classAcustoms | RV Fresh and Gray Water Tank | Combo Pack (21 Gallon & 25 Gallon) | RV Water Holding Tanks

**Brand:** classacustoms
**Price:** S$720
**Availability:** ✅ In Stock

## Summary

> 🚐 Stay hydrated, stay compliant — the ultimate RV water tank duo!

## Quick Answers

- **What is this?** classAcustoms | RV Fresh and Gray Water Tank | Combo Pack (21 Gallon & 25 Gallon) | RV Water Holding Tanks by classacustoms
- **How much does it cost?** S$720 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/188582967-classacustoms-rv-fresh-and-gray-water-tank-combo-pack-21)

## Best For

- classacustoms enthusiasts

## Why This Product

- Trusted classacustoms brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** UV-8 stabilized, corrosion and rust-resistant seamless construction for long-term durability.
- • **Dual Tank Power:** Combo pack with 21 & 25 gallon tanks for versatile fresh and gray water storage.
- • **Visible Waterline:** Creamy white translucent design lets you monitor water levels at a glance.
- • **Health-First Materials:** NSF-certified, BPA-free polyethylene ensures safe drinking water compliance.
- • **Pro-Grade Installation:** OEM quality tanks designed for certified technician installation to guarantee safety and warranty.

## Overview

The classAcustoms RV Fresh and Gray Water Tank Combo Pack features two durable, NSF/ANSI Std 61 certified polyethylene tanks (21 and 25 gallons) with UV-8 stabilization for superior resistance to corrosion and UV damage. Designed for fresh or gray water use, these BPA-free tanks offer seamless construction and visible waterlines, ensuring safe, reliable water storage for RVs and food trucks alike. OEM quality and health department approved, they require professional installation to maintain warranty and performance.

## Description

NSF Certified MATERIALS used for manufacturing process -- ALL PARTS of tank made with NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin with UV-8 stabilization -- The tank and fittings are both made out of this material. FRESH/DRINKING WATER SAFE - Other tank brands without NSF logo will not pass a health inspection, tanks made *without* the correct materials may be hazardous to your health. BPA FREE - Class A Customs does not carry this chemical nor uses it in the manufacturing process. FRESH or GRAY TANK use. SEAMLESS one piece construction, no seams to burst. RESISTANT to Stain, Corrosion and Rust Resistant. COLOR Creamy White you can see waterline through tank. OEM PART - No retail box - no install instruction. Have a certified technician install all parts to prevent product damage and personal injury. PREPARATION - Sanitize each tank prior to use to remove any debris from the manufacturing process. Tanks are made in a warehouse, wipe with a damp cloth to remove surface dust or scuffs. TANK MUST BE VENTED allowing air in and out when in use. **DO NOT PRESSURIZE TANK** DO NOT HOOK GARDEN HOSE DIRECTLY TO TANK **DAMAGE WILL OCCUR** DO NOT over-tighten fittings damage will occur. MOUNTING & BRACING - Place tank on level surface and brace to prevent tank from moving during transit. DO NOT hang tank by straps. DO NOT place weight on tank. WARRANTY - Cutting or modifying the tank in any way voids any/all warranty Using tank for any purpose other than fresh/gray water storage voids any/all warranty FOOD VENDORS You must verify requirements with health department where inspection will be made. BEFORE PURCHASING - Verify Requirements on Fresh Water Tank, Gray Water Tank, fittings, drainage, and mounting placement.

Review: As described - Exactly what we needed for our food truck. Passed inspection with no worries from our strict health department.
Review: Perfect for my Coffee Trailer. - Perfect for my Coffee Trailer. Nice size and easy to install.

## Features

- Combo Pack of RV Fresh & Gray Water Tanks, 21 Gallon & 25 Gallon
- NSF Certified MATERIALS used for manufacturing process -- ALL PARTS of tank made with NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin with UV-8 stabilization -- The tank and fittings are both made out of this material.
- These 21 and 25 gallontanks each have two 1/2" female NPT fittings (fitting will be closed, to use remove inner membrane with razor knife) and two 1 1/2" female NPT fittings (fitting is not closed, this fitting is completely open)
- 21 Gallon Tank measurements - 34" x 9" x 16" (+/- .25")
- 25 Gallon Tank measurements - 33 1/2" x 17" x 10" (+/- .25")

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B085DD6CBJ |
| Best Sellers Rank | #2,000,356 in Automotive ( See Top 100 in Automotive ) #457 in RV Freshwater Tanks & Inlets |
| Brand | classAcustoms |
| Capacity | 25 Gallons |
| Color | Creamy White |
| Customer Reviews | 4.5 4.5 out of 5 stars (28) |
| Date First Available | September 12, 2019 |
| Manufacturer | Class A Customs |
| Manufacturer Part Number | TKC-21/25 |
| Material | Polyethylene (PE), Resin |
| Shape | Cylindrical |
| Specification Met | National Sanitation Foundation 61 |

## Product Details

- **Brand:** classAcustoms
- **Capacity:** 25 Gallons
- **Color:** Creamy White
- **Material:** Polyethylene (PE), Resin
- **Specification Met:** National Sanitation Foundation 61

## Images

![classAcustoms | RV Fresh and Gray Water Tank | Combo Pack (21 Gallon & 25 Gallon) | RV Water Holding Tanks - Image 1](https://m.media-amazon.com/images/I/610fJKgdP1L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ As described
*by ;***) on October 10, 2022*

Exactly what we needed for our food truck. Passed inspection with no worries from our strict health department.

### ⭐⭐⭐⭐⭐ Perfect for my Coffee Trailer.
*by A***R on May 22, 2021*

Perfect for my Coffee Trailer. Nice size and easy to install.

### ⭐⭐⭐⭐ They look like they’ll do the trick
*by A***Y on August 30, 2021*

Bought for my food trailer. Haven’t installed yet, so will update after we put them in and run water through them! Good size, seems to be decent quality. No NSF stamp anywhere.

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**Shop now:** [https://www.desertcart.sg/products/188582967-classacustoms-rv-fresh-and-gray-water-tank-combo-pack-21](https://www.desertcart.sg/products/188582967-classacustoms-rv-fresh-and-gray-water-tank-combo-pack-21)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-05-18*