---
product_id: 7766030
title: "Dial 3438 Mastercool Cooler Pad, 40\" x 28\" x 8\""
brand: "dial"
price: "€ 466.35"
currency: EUR
in_stock: true
reviews_count: 8
category: "Dial"
url: https://www.desertcart.sk/products/7766030-dial-3438-mastercool-cooler-pad-40-x-28-x-8
store_origin: SK
region: Slovakia
---

# 40" x 28" x 8" perfect fit Durable, long-lasting build Precision-made in China Dial 3438 Mastercool Cooler Pad, 40" x 28" x 8"

**Brand:** dial
**Price:** € 466.35
**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?** € 466.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/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

- • **Built to Endure:** Engineered with specialty materials to withstand mineral buildup and last years
- • **Trusted Quality:** Backed by a top-rated brand with 4.3 stars from 184+ reviews
- • **Cost-Effective Cooling:** Slash your energy bills with efficient evaporative cooling technology
- • **Effortless Installation:** Fits seamlessly into your cooler for instant upgrade
- • **Optimized for Desert Climates:** Designed to maximize cooling in dry, hot environments where it matters most

## Overview

The Dial 3438 Mastercool Cooler Pad is a 40" x 28" x 8" evaporative cooler replacement pad designed for residential use. Made with durable specialty materials in China, it efficiently cools dry air by evaporative technology, offering a cost-effective alternative to traditional air conditioning. Highly rated by users, it withstands mineral deposits over years of use, making it a reliable upgrade for desert and dry climate cooling systems.

## 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 | #154,284 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #628 in Camping Cooler Accessories |
| Brand Name | Dial |
| Color | White |
| Controls Type | Button |
| Customer Reviews | 4.5 4.5 out of 5 stars (185) |
| Form Factor | Desert |
| Global Trade Identification Number | 00026529343800 |
| Included Components | mattress-pads |
| Item Weight | 1 Pounds |
| Manufacturer | Standard Plumbing Supply |
| Manufacturer Part Number | 3438 |
| Material Type | Specialty |
| Model Name | 3438 |
| Model Number | 3438 |
| Mounting Type | Freestanding |
| Operation Mode | manual |
| Recommended Uses For Product | Residential |
| Size | 40" x 28" x 8" |
| Smart Home Compatibility | Not Smart Home Compatible |
| UPC | 026529343800 |
| Unit Count | 1.0 Count |
| Warranty Description | -. |

## Product Details

- **Brand:** Dial
- **Color:** White
- **Controls Type:** Button
- **Form Factor:** Desert
- **Included Components:** mattress-pads
- **Item Weight:** 1 Pounds
- **Material:** Specialty
- **Model Name:** 3438
- **Mounting Type:** Freestanding
- **Recommended Uses For Product:** Residential

## 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!

### ⭐⭐⭐⭐ Master cooler pads
*by A***R on March 1, 2026*

Pads fit perfectly and work great just has a funny smell but I knew that was going to happen.great product.

## 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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**Shop now:** [https://www.desertcart.sk/products/7766030-dial-3438-mastercool-cooler-pad-40-x-28-x-8](https://www.desertcart.sk/products/7766030-dial-3438-mastercool-cooler-pad-40-x-28-x-8)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-05-06*