---
product_id: 194055135
title: "Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (5 Gallon & 7 Gallon) | RV Water Holding Tanks"
brand: "classacustoms"
price: "S$279"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/194055135-class-a-customs-rv-fresh-and-gray-water-tank-combo
store_origin: SG
region: Singapore
---

# NSF Certified Materials 5 & 7 Gallon Capacity Multiple NPT Fittings Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (5 Gallon & 7 Gallon) | RV Water Holding Tanks

**Brand:** classacustoms
**Price:** S$279
**Availability:** ✅ In Stock

## Summary

> 🚐 Adventure Awaits with Every Drop!

## Quick Answers

- **What is this?** Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (5 Gallon & 7 Gallon) | RV Water Holding Tanks by classacustoms
- **How much does it cost?** S$279 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/194055135-class-a-customs-rv-fresh-and-gray-water-tank-combo)

## 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:** Crafted from NSF-certified MDPE resin for ultimate durability.
- • **UV-Resistant Design:** Engineered to withstand the elements, keeping your water safe.
- • **Compact & Convenient:** Perfectly sized for RVs, ensuring space efficiency.
- • **Stay Hydrated on the Road:** Never run out of fresh water with our dual-capacity tanks!
- • **Versatile Fitting Options:** Equipped with multiple NPT fittings for easy customization.

## Overview

The Class A Customs RV Fresh and Gray Water Tank Combo Pack includes a 5-gallon and a 7-gallon tank, both made from NSF-certified Medium Density Polyethylene (MDPE) resin. Designed for RV enthusiasts, these tanks feature multiple NPT fittings for versatile use and are UV-stabilized for long-lasting performance. Perfect for ensuring you have fresh water on your travels!

## Description

Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (5 Gallon & 7 Gallon) | RV Water Holding Tanks

## Features

- Combo Pack of RV Fresh & Gray Water Tanks, 5 Gallon & 7 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 5 gallon and 7 gallon tanks each have three 1/2" female NPT fittings and one 1 1/2" female NPT fitting. Please note - the 11/2" female NPT fittings have a membrane sealing them closed, this membrane must be cut out by the end user for the fittings to be used. The 1/2" fittings are open, *WITHOUT* any membrane sealing them closed.
- 5 Gallon Tank measurements - 17 1/2" x 9 3/4" x 7" (+/- .25")
- 7 Gallon Tank measurements - 23 3/4" x 9 3/4" x 7" (+/- .25")

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | classAcustoms |
| Color | Creamy White |
| Material | Resin, Polyethylene (PE) |
| Capacity | 5 Gallons |
| Specification Met | National Sanitation Foundation 61 |
| Shape | Cylindrical or Rectangular |
| Manufacturer | Class A Customs |
| Manufacturer Part Number | TKC-05/07 |

## Product Details

- **Brand:** classAcustoms
- **Color:** Creamy White
- **Material:** Polyethylene (PE), Resin
- **Product Dimensions:** 23.75"L x 9.75"W x 7"H
- **Capacity:** 5 Gallons

## Images

![Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (5 Gallon & 7 Gallon) | RV Water Holding Tanks - Image 1](https://m.media-amazon.com/images/I/61hOT+QgRKL.jpg)

## Questions & Answers

**Q: Do you make custom potable water tanks with anti slooshing baffles?**
A: At this time Class A Customs does not manufacture a tank with baffles inside, you can view all our list of tanks online. Thank you, Class A Customs

**Q: are they bpa free?**
A: MADE IN USA Class A Customs manufactures these tanks and is located in Elkhart, Indiana

FRESH / DRINKING WATER SAFE great for rvs, food vendors, tiny houses, overlanding and extra water storage

BPA FREE Class A Customs does not carry this chemical nor uses it in the manufacturing process

NSF CERTIFIED MATERIALS Tank & fittings made from DOW NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin
UV-8 Stabilization

Complies with:
U.S. FDA 21 CFR 177.1520 (c)3.1a
Canadian HPFB No Objection
Underwriters Laboratories Inc.
EU, 10/2011
NSF International NSF/ANSI Std 61 (sec 4 & 5)

**Q: Is there an adapter to make the 1.5" fitting 2"? I need it to be 2" for state plumbing approval**
A: You would need to cut out the 1.5 connector & drill the opening larger in the tank, then try to install a connector that won’t leak. I do remember a YouTube video of someone trying to heat the tank, but that looked like guarantee fail to me.

**Q: Can you guys install an access port for cleaning so it is under warranty? Also, could they be used in a hot water situation, (temp rating)?**
A: We do not carry clean out ports, typically a bulkhead fitting is used for this application, please be sure to research these products online for use and installation.

Manufacturer warranty covers manufacturer defect on manufacturer installed fittings and tank, so this would not cover a fitting or modification you install. 

Using this tank for any purpose other than fresh or gray water storage will void any/all warranty. Do Not use tanks for sewer or fuel.

## Frequently Bought Together

- Class A Customs | RV Fresh and Gray Water Tank | Combo Pack (5 Gallon & 7 Gallon) | RV Water Holding Tanks
- SEAFLO 33-Series Water Pressure Pump - 115V AC, 3.3 GPM, 45 PSI, Self Priming, Smart Pressure Switch, UL & CSA Certified, for RV, Caravan, Off-Grid, Marine, and Industrial Use
- Concession Sink 3 Large + 1 Small Hand Washing- 4 Compartment Stand Food Trailer

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/194055135-class-a-customs-rv-fresh-and-gray-water-tank-combo](https://www.desertcart.sg/products/194055135-class-a-customs-rv-fresh-and-gray-water-tank-combo)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-03*