---
product_id: 214900958
title: "| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks"
brand: "classacustoms"
price: "6766.24 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Class Acustoms"
url: https://www.desertcart.tn/products/214900958-rv-fresh-and-gray-water-tank-combo-pack-30-gallon
store_origin: TN
region: Tunisia
---

# 70 Gallons combined capacity Seamless one-piece MDPE construction NSF Certified, drinking water safe | RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks

**Brand:** classacustoms
**Price:** 6766.24 DT
**Availability:** ✅ In Stock

## Summary

> 💧 Stay hydrated on the road with confidence—your RV’s water lifeline!

## Quick Answers

- **What is this?** | RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks by classacustoms
- **How much does it cost?** 6766.24 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/214900958-rv-fresh-and-gray-water-tank-combo-pack-30-gallon)

## 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:** Seamless, thick MDPE resin resists cracks and leaks for years of worry-free use
- • **Dual Tank Powerhouse:** 30 & 40 gallon combo for ultimate water storage flexibility
- • **Smart Venting Design:** Non-pressurized tanks with venting prevent damage and ensure safe operation
- • **Versatile Installation:** Rotate tanks to fit your space perfectly; easy to mount and brace securely
- • **Certified Safe Hydration:** Made from NSF/ANSI Std 61 approved materials—fresh water you can trust

## Overview

This combo pack includes one 30-gallon and one 40-gallon fresh or gray water holding tank made in the USA by Class A Customs. Constructed from NSF-certified medium density polyethylene resin, these seamless, vented tanks ensure safe, durable, and flexible water storage for RV enthusiasts. Designed for easy installation and long-lasting performance, they meet strict sanitation standards and provide a reliable solution for your mobile water needs.

## Description

FRESH/DRINKING WATER SAFE – MADE IN THE USA by Class A Customs using NSF Certified Materials Tank & fittings made from DOW NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin SEAMLESS One-piece construction, no seams to burst COLOR Creamy White you can see waterline through tank. OEM PART No retail box - no install instructions Have a certified technician install all parts to prevent product damage and personal injury PREPARATION Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process. TANK MUST BE VENTED allowing air in and out when in use. *DO NOT PRESSURIZE TANK* do not make a sealed connection from 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. FOOD VENDORS - BEFORE PURCHASING - Verify all requirements with health department where inspection will be made.

Review: Easy to install holding tanks. - The sizes are precise. Thick plastic, should last years of installed correctly. Schematics came with the tanks, very easy to understand and folow.
Review: Cheaply made with glues ends instead of molded but the shape is perfect. - I wish it had caps included

## Features

- Combo Pack (ONE) 30 Gallon & (ONE) 40 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage
- NON-PRESSURIZED TANK: tank must be vented allowing air in and out during use. DO NOT make a sealed connection with a garden hose directly to tank, this is a pressurized connection and will cause tank to explode causing damage. For filling tank it is recommended to use a fill dish or other gravity process.
- 30 and 40 GALLON EACH TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.
- 30 GALLON TANK MEASUREMENTS 34.5” x 12” x 17.5” -Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)
- 40 GALLON TANK MEASUREMENTS 39.5” x 13” x 18” -Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0897X8DKQ |
| Best Sellers Rank | #296,208 in Automotive ( See Top 100 in Automotive ) #110 in RV Freshwater Tanks & Inlets |
| Brand | classAcustoms |
| Brand Name | classAcustoms |
| Capacity | 30 gallons |
| Color | Creamy White |
| Customer Reviews | 4.5 out of 5 stars 94 Reviews |
| Item Dimensions L x W x H | 39.5"L x 12"W x 17.5"H |
| Manufacturer | Class A Customs |
| Manufacturer Part Number | TKC-30/40 |
| Material | Polyethylene (PE), Resin |
| Material Type | Polyethylene (PE), Resin |
| Product Dimensions | 39.5"L x 12"W x 17.5"H |
| Shape | Rectangular |
| Specification Met | National Sanitation Foundation 61 |

## Product Details

- **Brand:** classAcustoms
- **Capacity:** 30 Gallons
- **Color:** Creamy White
- **Material:** Polyethylene (PE), Resin
- **Product Dimensions:** 39.5"L x 12"W x 17.5"H

## Images

![| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks - Image 1](https://m.media-amazon.com/images/I/51ytAjDl9VL.jpg)
![| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks - Image 2](https://m.media-amazon.com/images/I/81cytcuSf0L.jpg)
![| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks - Image 3](https://m.media-amazon.com/images/I/81RGKdElWXL.jpg)
![| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks - Image 4](https://m.media-amazon.com/images/I/71kc5yphBXS.jpg)
![| RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks - Image 5](https://m.media-amazon.com/images/I/71Urviu0AoS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to install holding tanks.
*by A***N on October 7, 2025*

The sizes are precise. Thick plastic, should last years of installed correctly. Schematics came with the tanks, very easy to understand and folow.

### ⭐⭐⭐⭐ Cheaply made with glues ends instead of molded but the shape is perfect.
*by J***E on January 15, 2023*

I wish it had caps included

### ⭐⭐ Don’t hold shape
*by G***O on February 4, 2022*

I ordered this kit of two water tanks for my shuttle conversion. After a couple months after install, both tanks have started to deform and not hold their original rigid shape. I’m very concerned about the longevity of the tanks and I’m worried that I may have to replace them soon with a quality brand. For the price I paid for these tanks and the expensive shipping (this is not Prime eligible), I expected better quality.

## Frequently Bought Together

- Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (30 Gallon & 40 Gallon) | RV Water Holding Tanks
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-22*