--- product_id: 330640812 title: "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: "$71.20" currency: USD in_stock: true category: "Klewee" url: https://www.desertcart.us/products/330640812-pond-liner-4-x-7ft-20-mil-small-pond-liners store_origin: US region: United States of America --- # UV & ozone resistant for 30+ years Fish & plant safe premium LDPE 20 mil thick heavy-duty durability 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:** $71.20 **Availability:** ✅ In Stock ## Summary > 🌿 Transform your backyard into a lasting aquatic sanctuary with KLEWEE Pond Liner! ## Quick Answers - **What is this?** 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?** $71.20 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/330640812-pond-liner-4-x-7ft-20-mil-small-pond-liners) ## 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 - • **Eco-Friendly Oasis Creator:** Made from smooth, non-toxic LDPE that’s safer for your aquatic life than traditional PVC liners. - • **Barrier Against Contaminants:** Effectively blocks harmful soil substances, keeping your water crystal clear and your ecosystem thriving. - • **Versatile Water Feature Essential:** Perfectly sized for ponds, streams, waterfalls, and fountains—your all-in-one waterproof solution. - • **Built to Last, Designed to Impress:** 20 mil thickness ensures unmatched puncture and weather resistance for decades of worry-free use. - • **Effortless Installation, Instant Upgrade:** No special tools needed; just warm it in the sun for flexible shaping and a flawless fit every time. ## Overview The KLEWEE Pond Liner is a 4 x 7 ft, 20 mil thick black LDPE liner engineered for durability and environmental safety. UV and ozone resistant, it offers over 30 years of protection while being safe for fish and plants. Ideal for ponds, streams, waterfalls, and fountains, it prevents soil contaminants from polluting your water and is easy to install without special tools. ## 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 | |---------------|-------| | ASIN | B08YZ19M28 | | Additional Features | Heavy Duty | | Best Sellers Rank | #59,031 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #37 in Water Garden & Pond Liners & Seals | | Brand Name | KLEWEE | | Color | Black | | Customer Reviews | 4.3 4.3 out of 5 stars (543) | | Installation Type | Self-installation | | Item Dimensions L x W | 84"L x 48"W | | Item Weight | 0.98 kg | | Manufacturer | KLEWEE | | Material Type | High Density Polyethylene (HDPE) | | Pattern | Solid | | Product Care Instructions | Clean with mild soap and water | | Product Style | Custom | | Shape | Rectangular | | Size | 7' x 4' (Rectangular) | | Theme | Water Gardening | ## Product Details - **Brand:** KLEWEE - **Color:** Black - **Material:** High Density Polyethylene (HDPE) - **Product Dimensions:** 84"L x 48"W - **Size:** 7' x 4' (Rectangular) ## Images ![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) ## Available Options This product comes in different **Size** 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 --- ## 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.us/products/330640812-pond-liner-4-x-7ft-20-mil-small-pond-liners](https://www.desertcart.us/products/330640812-pond-liner-4-x-7ft-20-mil-small-pond-liners) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-11*