---
product_id: 500501622
title: "KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains"
brand: "klewee"
price: "660 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/500501622-klewee-pond-liner-4-x-7ft-20-mil-small-pond
store_origin: DK
region: Denmark
---

# Eco-friendly LDPE safe for fish & plants UV & ozone resistant for longevity 20 mil ultra-thick durability KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains

**Brand:** klewee
**Price:** 660 kr
**Availability:** ✅ In Stock

## Summary

> 🌊 Elevate your outdoor oasis with durability and eco-friendly style!

## Quick Answers

- **What is this?** KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains by klewee
- **How much does it cost?** 660 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/500501622-klewee-pond-liner-4-x-7ft-20-mil-small-pond)

## Best For

- klewee enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** 20 mil thickness ensures decades of puncture-resistant, heavy-duty protection.
- • **Eco-Safe Design:** Made from premium LDPE, it’s safer for your aquatic life than traditional PVC liners.
- • **Sunproof & Strong:** UV and ozone resistance means your pond liner won’t degrade under harsh sunlight.
- • **Effortless Installation:** Flexible design softens in sunlight for a perfect fit—no special tools or skills needed.
- • **Versatile Water Feature Essential:** Perfect for ponds, streams, waterfalls, and fountains—your all-in-one waterproof solution.

## Overview

The KLEWEE Pond Liner is a 4 x 7 ft, 20 mil thick black LDPE liner designed for outdoor water features. It offers superior puncture resistance, UV and ozone protection, and is environmentally safe for fish and plants. Ideal for ponds, streams, waterfalls, and fountains, it’s easy to install and built to last over 30 years.

## Description

4 x 7 Feet 20 Mil LDPE Pond Liners for Outdoor Fish Ponds, Streams Fountains and Water Gardens

## Features

- THICKER MATERIAL - With the thickness of 20 mil, our pond liners provide superior durability than other liners, UV and ozone resistant, puncture resistant, can be used more than 30 years
- FISH & PLANTS SAFE - Specially designed for water gardens, the 4' x 7' small pond liner is made of premium smooth LDPE, which is environmentally friendly, more safer for your fish and plant life than the PVC liners
- MULTIFUNCTIONAL - The fish pond liner are perfect for streams, water gardens, fish/koi ponds, fountains, backyard waterfalls and outdoor decorative ponds; Also a protective waterproof liner for your different purposes
- PROTECTIVE - This pond liner can effectively prevent harmful substances in the soil from penetrating into the pond, helping keep water clean to create a healthy natural environment for wildlife and plants, meanwhile you can clean the pond easily
- EASY TO USE - Easy to install, requires no special tools or skills; For better flexibility, it's recommended to lay the liner out in the sun for 10-15 minutes to easily shaped to fit the size and contours of any water feature

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | KLEWEE |
| Product Dimensions | 213.36 x 121.92 x 0.01 cm; 980 g |
| Size | 20 Mil - 4 x 7ft |
| Colour | Black |
| Style | Compact |
| Material | Low Density Polyethylene (LDPE) |
| Pattern | Solid |
| Shape | Rectangular |
| Installation method | Floating |
| Special Features | UV Resistant |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 980 g |

## Product Details

- **Size:** 20 Mil - 4 x 7ft
- **Colour:** Black
- **Material:** Low Density Polyethylene (LDPE)
- **Brand:** KLEWEE
- **Product dimensions:** 2.13L x 1.22W metres

## Images

![KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains - Image 1](https://m.media-amazon.com/images/I/51c+UWu3QDS.jpg)
![KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains - Image 2](https://m.media-amazon.com/images/I/81RGScV8PxS.jpg)
![KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains - Image 3](https://m.media-amazon.com/images/I/71WXtHNmTqS.jpg)
![KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains - Image 4](https://m.media-amazon.com/images/I/61W2bED-o5S.jpg)
![KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains - Image 5](https://m.media-amazon.com/images/I/611Nc9CzItS.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the depth?**
A: Well you could go 4 ft long 1 ft wide that would give you 1.5 ft depth  with a 4 by 7 ft liner

**Q: what type of seam tape works with this materal**
A: We did not tape any  seams but LDPE should be compatible with any tape designed for use with pond liners.  I do a lot of work with plastics and the two pieces of advice I would offer are buy a good quality, highly rated tape and wipe down any seaming locations with a proper solvent before applying tape.  I usually use a 70% or higher isopropyl alcohol to wipe down any plastics or resins that I am bonding.  It will remove any oils and release agents from the plastics and I have never found any plastics that it harms.

**Q: Can you cut it to the size you want**
A: Yes, you can cut the pond liner into any size and any shape you want.

**Q: What type or brand of seam sealer will work on this product?**
A: Personally I bought a seam sealer from the Pond Guy. But how well any sealer works depends on whether you are gluing together two liners of similar construct. This pond liner is not very flexible and rather brittle, and shiny. It did not match the rubber type liner of my current pond. Therefore, this liner did not suit my needs. I ended up pulling up this replacement liner and purchasing a small amount of proper liner from the Pond Guy, and more sealer. Don't waste your money on this liner

## Frequently Bought Together

- KLEWEE Pond Liner, 4 x 7ft 20 Mil Small Pond Liners, Black Heavy LDPE Duty Pond Liners for Outdoor Ponds, Waterfall, Stream, Fountains
- TotalPond Waterfall Foam Sealant

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-14*