--- product_id: 93591982 title: "18\" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC)" brand: "polylok" price: "¥44896" currency: JPY in_stock: true category: "Polylok" url: https://www.desertcart.jp/products/93591982-18-heavy-duty-cover-lid-for-corrugated-pipe-pn-3007 store_origin: JP region: Japan --- # Fits 18" corrugated pipe precisely Square drive screws for security Highest UV protection for durability 18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) **Brand:** polylok **Price:** ¥44896 **Availability:** ✅ In Stock ## Summary > 🛠️ Lock in durability and security with Polylok’s heavy-duty cover! ## Quick Answers - **What is this?** 18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) by polylok - **How much does it cost?** ¥44896 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/93591982-18-heavy-duty-cover-lid-for-corrugated-pipe-pn-3007) ## Best For - polylok enthusiasts ## Why This Product - Trusted polylok brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ultimate UV Shield:** Crafted with the highest level of UV protection to maintain strength and color under harsh sun exposure. - • **Enhanced Security Screws:** Equipped with square drive screws designed to deter unauthorized access and enhance safety. - • **Rugged HDPE Construction:** Made from durable High Density Polyethylene for long-lasting, heavy-duty use in demanding conditions. - • **Airtight & Watertight Seal:** Includes a factory-installed foam gasket that guarantees leak-proof performance in any environment. - • **Precision Fit for 18" Pipes:** Engineered to snugly fit 18" corrugated or ribbed pipes, ensuring seamless integration. ## Overview The Polylok 18" Heavy Duty Cover/Lid (PN: 3007-HDC) is a robust, precision-engineered HDPE cover designed to fit 18" corrugated pipes. Featuring the highest UV protection, a foam gasket for airtight and watertight sealing, and security-enhancing square drive screws, it offers unmatched durability and safety for professional drainage and plumbing applications. ## Description Buy Polylok 18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC): Pipe Fittings - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Fit's 18" corrugated or ribbed pipe. (Inside diameter: 17.30" / Outside diameter: 20.57") - Skid resistance surface - Highest level of UV Protection included - Includes a foam gasket for airtight and watertight applications - Includes square drive screws to discourage unauthorized entr - Made of High Density Polyethylene (HDPE) - Corrugated Pipe NOT included ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00JEL9XEK | | Best Sellers Rank | #49,850 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,395 in Pipe Fittings | | Brand Name | Polylok | | Color | Green | | Customer Reviews | 4.5 4.5 out of 5 stars (200) | | Item Dimensions L x W | 21"L x 21"W | | Item Weight | 1.8 pounds | | Manufacturer | Polylok | | Manufacturer Part Number | 3007-HDC | | Material Type | High Density Polyethylene | | Model Number | 3007-HDC | | Number of Pieces | 1 | | Product Style | Compact | | Shape | Round | | UPC | 762022552119 | | Unit Count | 1 Count | ## Product Details - **Brand:** Polylok - **Color:** Green - **Material:** High Density Polyethylene - **Product Dimensions:** 21"L x 21"W - **Style:** Compact ## Images ![18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) - Image 1](https://m.media-amazon.com/images/I/71Ktj-ylUbL.jpg) ![18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) - Image 2](https://m.media-amazon.com/images/I/41AxxPiOPHL.jpg) ![18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) - Image 3](https://m.media-amazon.com/images/I/51NwII8UU8L.jpg) ![18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) - Image 4](https://m.media-amazon.com/images/I/415jPD8WuSL.jpg) ![18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) - Image 5](https://m.media-amazon.com/images/I/41J-8qOVRrL.jpg) ## Questions & Answers **Q: Does this fit 18 inch hdpe pipe ?** A: Yes. **Q: To get a good seal, when cutting my 18 corrugated pipe: Do I need to cut @ the outside or inside of corrugation? or does it not matter?** A: Not exactly sure what is meant by the inside or outside of the corrugation, but you want to cut the pipe as straight as possible to have the best seal with the lid. **Q: Are these flat Like other sizes also?** A: I believe you could call it flat. Around the rim are holes for hold down screws. I used a few but I don't think they are necessary. My cover is 6" down and I have driven my tractor over the top soil many times,so it is durable. **Q: Will this fit a norwesco 24 in by 20 in manhole extension?** A: This cover is designed to fit corrugated pipe with an inside diameter of 18". I would recommend looking at the technical drawing for this product on the manufacturers website to determine if it would fit your application: https://www.polylok.com/mwdownloads/download/link/id/320/ Seeing that this covers OD is only 20.57" I would say no to your question. ## Frequently Bought Together - Polylok 18" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3007-HDC) - Polylok 24" Heavy Duty Flat Cover/Lid for Corrugated Pipe (PN: 3008-WEST) - Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C) --- ## 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.jp/products/93591982-18-heavy-duty-cover-lid-for-corrugated-pipe-pn-3007](https://www.desertcart.jp/products/93591982-18-heavy-duty-cover-lid-for-corrugated-pipe-pn-3007) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-11*