---
product_id: 7766030
title: "Dial 3438 Mastercool Cooler Pad, 40\" x 28\" x 8\""
brand: "dial"
price: "€ 373.78"
currency: EUR
in_stock: true
reviews_count: 8
category: "Dial"
url: https://www.desertcart.ie/products/7766030-dial-3438-mastercool-cooler-pad-40-x-28-x-8
store_origin: IE
region: Ireland
---

# Eco-friendly evaporative cooling 40" x 28" x 8" perfect fit Durable 8-inch thick pad Dial 3438 Mastercool Cooler Pad, 40" x 28" x 8"

**Brand:** dial
**Price:** € 373.78
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay cool, save green, and beat the heat like a pro!

## Quick Answers

- **What is this?** Dial 3438 Mastercool Cooler Pad, 40" x 28" x 8" by dial
- **How much does it cost?** € 373.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/7766030-dial-3438-mastercool-cooler-pad-40-x-28-x-8)

## Best For

- dial enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Quality:** Manufactured by Standard Plumbing Supply with proven reliability
- • **Energy-Smart Cooling:** Slash your cooling bills with natural evaporation power
- • **Effortless Installation:** Fits seamlessly into your cooler for instant upgrade
- • **Long-Lasting Durability:** 8-inch thick pad withstands mineral buildup for years
- • **Value-Packed Performance:** Top-rated choice with glowing 4.4-star reviews

## Overview

The Dial 3438 Mastercool Cooler Pad is a robust 40" x 28" x 8" evaporative cooling pad designed to fit most swamp coolers. Engineered for durability, it efficiently cools air through natural evaporation, reducing energy costs while providing reliable performance. Manufactured by Standard Plumbing Supply, this pad offers a cost-effective, eco-friendly alternative to traditional air conditioning, backed by strong customer satisfaction.

## Description

Dial 3438 Mastercool Cooler Pad, 40" x 28" x 8"

Review: Working excellent! - Great price. Everything fit great. Terrible smell for the first several days, but going great now!
Review: Nature of the Beast - For the dry desert southwest, evaporative coolers, also called swamp coolers, are a simple and ingenious device for cooling your house. They are nothing more than a big box containing a fan and a water soaked pad. As hot dry air is drawn across the wet pad and into your house, evaporation causes rapid cooling of the air and it feels just as cold as air-conditioning, for a fraction of the cost. During the six weeks or so of late summer monsoon weather, the air becomes humid and the swamp cooler is useless. But for the rest of the hot season you will save hundreds of dollars off your cooling bill. In my area, the water is supplied by the Colorado River and deep wells. It's full of calcium and other minerals. The 8 inch thick cooler pads go in looking and weighing like corrugated cardboard, but after 3 to 5 years of use, they come out looking and feeling like concrete from all the minerals deposited on them by the evaporating water. At this point they need to be changed out. This is the third time I've had to change the pads in my coolers. This is also the third brand of cooler pads I have used and they ALL have the same slight odor for a few hours when new and first soaked with water. Smells to me like library glue from my school days. It's not all that bad and it's certainly not toxic. I suspect that the two users who gave such low ratings to these pads have never changed pads before. They'll just have to get over it, or of course there's always the option of using your air-conditioning instead, if it bothers you that much! These pads are just fine, no better and no worse than the pads I've used before. They do their job. desertcart also sells them at a better price then the local stores here in town!

## Features

- The product is easy to use
- The product is highly durable
- The product is manufactured in China
- Package dimensions : 29.25 inches (H) x 20.75 inches (L) x 16.75 inches (W)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003JV1NJY |
| Best Sellers Rank | #179,831 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #559 in Camping Cooler Accessories |
| Customer Reviews | 4.4 4.4 out of 5 stars (181) |
| Date First Available | September 28, 2006 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1 pounds |
| Item model number | 3438 |
| Manufacturer | Standard Plumbing Supply |
| Product Dimensions | 20.75 x 16.75 x 29.25 inches |

## Product Details

- **Brand:** Dial
- **Color:** White
- **Item Weight:** 16 ounces
- **Material:** Specialty
- **Product Dimensions:** 20.75"L x 16.75"W x 29.25"H

## Images

![Dial 3438 Mastercool Cooler Pad, 40" x 28" x 8" - Image 1](https://m.media-amazon.com/images/I/71EWdzWSNSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Working excellent!
*by T***M on June 25, 2023*

Great price. Everything fit great. Terrible smell for the first several days, but going great now!

### ⭐⭐⭐⭐⭐ Nature of the Beast
*by L***K on June 7, 2013*

For the dry desert southwest, evaporative coolers, also called swamp coolers, are a simple and ingenious device for cooling your house. They are nothing more than a big box containing a fan and a water soaked pad. As hot dry air is drawn across the wet pad and into your house, evaporation causes rapid cooling of the air and it feels just as cold as air-conditioning, for a fraction of the cost. During the six weeks or so of late summer monsoon weather, the air becomes humid and the swamp cooler is useless. But for the rest of the hot season you will save hundreds of dollars off your cooling bill. In my area, the water is supplied by the Colorado River and deep wells. It's full of calcium and other minerals. The 8 inch thick cooler pads go in looking and weighing like corrugated cardboard, but after 3 to 5 years of use, they come out looking and feeling like concrete from all the minerals deposited on them by the evaporating water. At this point they need to be changed out. This is the third time I've had to change the pads in my coolers. This is also the third brand of cooler pads I have used and they ALL have the same slight odor for a few hours when new and first soaked with water. Smells to me like library glue from my school days. It's not all that bad and it's certainly not toxic. I suspect that the two users who gave such low ratings to these pads have never changed pads before. They'll just have to get over it, or of course there's always the option of using your air-conditioning instead, if it bothers you that much! These pads are just fine, no better and no worse than the pads I've used before. They do their job. Amazon also sells them at a better price then the local stores here in town!

### ⭐⭐⭐⭐ Fit our evaporator cooler perfectly…
*by D***N on June 21, 2025*

Exactly what we needed. No complaints. Packed well, good quality. Worth every penny.

## Frequently Bought Together

- Dial 3438 Mastercool Cooler Pad, 40" x 28" x 8"
- Dial 3437 Mastercool Cooler Pad, 40" x 23" x 8"
- Dial Manufacturing DIAL-40867, No Color

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-11*