---
product_id: 13218514
title: "Frost King DE300 Standard Plastic Drain Away Downspout Extender, Extends 12-Feet, Green"
brand: "thermwell"
price: "€ 31.36"
currency: EUR
in_stock: true
category: "Thermwell"
url: https://www.desertcart.gr/products/13218514-frost-king-de300-standard-plastic-drain-away-downspout-extender-extends
store_origin: GR
region: Greece
---

# Customizable length Auto unrolls in rain Tool-free install Frost King DE300 Standard Plastic Drain Away Downspout Extender, Extends 12-Feet, Green

**Brand:** thermwell
**Price:** € 31.36
**Availability:** ✅ In Stock

## Summary

> 🌧️ Stay dry, stay worry-free — the smart way to protect your home!

## Quick Answers

- **What is this?** Frost King DE300 Standard Plastic Drain Away Downspout Extender, Extends 12-Feet, Green by thermwell
- **How much does it cost?** € 31.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/13218514-frost-king-de300-standard-plastic-drain-away-downspout-extender-extends)

## Best For

- thermwell enthusiasts

## Why This Product

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

## Key Features

- • **No Tools Needed:** Install in minutes without any tools—because your time is valuable.
- • **Sleek & Durable:** Matte green finish blends seamlessly with your exterior while standing up to the elements.
- • **Foundation Defender:** Directs water away from your home’s foundation, preventing costly damage.
- • **Cut-to-Fit Flexibility:** Trim to any length with scissors for a perfect, tailored fit every time.
- • **Rain-Responsive Design:** Automatically extends when it rains to protect your foundation effortlessly.

## Overview

The Frost King DE300 is a 12-foot long, green plastic downspout extender that automatically unrolls during rain to divert water away from your foundation. It installs easily without tools, can be trimmed to any length, and fits all standard downspouts, offering a practical, low-maintenance solution to protect your home from water damage.

## Description

Product Description Extender fits all standard downspouts. Takes water away from foundation. Installs easily, without the use of any tools. Unrolls automatically when it rains, and roll back up manually when it's dry. Trim to any length with scissors. Measurements are 12' x 7". From the Manufacturer Extender fits all standard downspouts. Takes water away from foundation. Installs easily, without the use of any tools. Unrolls automatically when it rains, and roll back up manually when it's dry. Trim to any length with scissors. Measurements are 12' x 7". P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Manufacturer Contact Information 1-800-526-5265 See more

## Features

- Unrolls automatically when it rains, and roll back up manually when it's dry
- Takes Water Away From Foundation
- Installs Easily, Without The Use Of Any Tools
- Measurements Are 12' X 7"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003K1GKCS |
| Additional Features | Removable |
| Best Sellers Rank | #23,743 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Gutter Downspouts |
| Brand Name | Thermwell |
| Color | Green |
| Customer Reviews | 3.5 3.5 out of 5 stars (2,100) |
| Finish Types | Matte |
| Fits Hole Size | 3 Inches |
| Global Trade Identification Number | 00077578057576 |
| Included Components | Frost King DE300 Standard Plastic Drain Away Downspout Extender, Extends 12-Feet, Green |
| Item Depth | 7 inches |
| Item Type Name | Frost King DE300 Standard Plastic Drain Away Downspout Extender, Extends 12-Feet, Green |
| Item Weight | 13.61 g |
| Manufacturer | THERMWELL PRODUCTS |
| Manufacturer Contact Information | 1-800-526-5265 |
| Manufacturer Part Number | DE300 |
| Manufacturer Warranty Description | Warranty. |
| Material Type | Plastic |
| Model Number | DE300 |
| Number of Items | 1 |
| Product Style | Modern |
| UPC | 077578057576 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Thermwell
- **Color:** Green
- **Finish Type:** Matte
- **Material:** Plastic
- **Special Feature:** Removable

## Images

![Frost King DE300 Standard Plastic Drain Away Downspout Extender, Extends 12-Feet, Green - Image 1](https://m.media-amazon.com/images/I/71KS7X5-oHL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can I get this in white**
A: I would have liked white too but didn't see any available.

**Q: Will this work at the end of a drain pipe past the btm of a downspout?**
A: Yes yet it doesn't retract , it just lays there. If its windy it will fly around so i zip tie mine to the downspout.

**Q: Can you cut it?**
A: Yes.  It is just thick plastic material.

**Q: Can you place to go around corners if you unroll yourself?**
A: Probably, if it is not a tight corner. I think a sharp bend would make the water back-up. It is just a thin plastic tube.

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**Shop now:** [https://www.desertcart.gr/products/13218514-frost-king-de300-standard-plastic-drain-away-downspout-extender-extends](https://www.desertcart.gr/products/13218514-frost-king-de300-standard-plastic-drain-away-downspout-extender-extends)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-08-03*