---
product_id: 93591981
title: "Polylok 12\" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C)"
brand: "polylok"
price: "€ 175.42"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/93591981-polylok-12-heavy-duty-cover-lid-for-corrugated-pipe-pn
store_origin: HR
region: Croatia
---

# Fits 12" corrugated pipes perfectly Square drive screws for secure access Top-tier UV protection for durability Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C)

**Brand:** polylok
**Price:** € 175.42
**Availability:** ✅ In Stock

## Summary

> 🛠️ Lock in durability and security with Polylok’s heavy-duty cover!

## Quick Answers

- **What is this?** Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C) by polylok
- **How much does it cost?** € 175.42 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/93591981-polylok-12-heavy-duty-cover-lid-for-corrugated-pipe-pn)

## 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:** Engineered with the highest level of UV protection to withstand harsh outdoor conditions without fading or cracking.
- • **Skid-Resistant Surface:** Enhanced grip design ensures safety and stability during installation and maintenance.
- • **Tamper-Resistant Security:** Equipped with square drive screws to prevent unauthorized access, giving you peace of mind.
- • **Airtight & Watertight Seal:** Includes a foam gasket that guarantees a secure, leak-proof closure to protect your infrastructure.
- • **Precision Fit for 12" Pipes:** Seamlessly compatible with standard corrugated and Polylok 12" products for hassle-free installation.

## Overview

The Polylok 12" Heavy Duty Cover/Lid (PN: 3004-C) is a robust, UV-protected HDPE cover designed to fit 12" corrugated pipes and Polylok products. Featuring a skid-resistant surface, foam gasket for airtight sealing, and tamper-proof square drive screws, it ensures long-lasting protection and secure access control for your plumbing infrastructure.

## Description

Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C)

## Features

- Fit's 12" corrugated or ribbed pipe and most Polylok 12" products. (Inside diameter: 11.35" / Outside diameter: 14.18")
- 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 entry
- Made of High Density Polyethylene (HDPE)
- Corrugated Pipe NOT included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Size | 12 Inch |
| Material | High Density Polyethylene (HDPE) |
| Brand | Polylok |
| Color | Green |
| Thread Size | 12 inch |
| Exterior Finish | Stainless Steel |
| Number of Pieces | 1 |
| Manufacturer | #N/A |
| Part Number | 3004-C |
| Item Weight | 1.65 pounds |
| Package Dimensions | 14.5 x 14.5 x 1.75 inches |
| Item model number | 3004-C |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Measurement System | inch |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Size:** 12 Inch
- **Material:** High Density Polyethylene (HDPE)
- **Brand:** Polylok
- **Color:** Green
- **Thread Size:** 12 inch
- **Exterior Finish:** Stainless Steel
- **Number of Pieces:** 1
- **Manufacturer:** #N/A

## Images

![Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C) - Image 1](https://m.media-amazon.com/images/I/41YPWjoiDjL.jpg)
![Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C) - Image 2](https://m.media-amazon.com/images/I/81hUEsMgWDL.jpg)
![Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C) - Image 3](https://m.media-amazon.com/images/I/41JWXPGP-SL.jpg)
![Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C) - Image 4](https://m.media-amazon.com/images/I/41DOO4SYy-L.jpg)
![Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C) - Image 5](https://m.media-amazon.com/images/I/31t94xw2TJL.jpg)

## Questions & Answers

**Q: What are the exact dimensions**
A: There is a pdf CAD drawing with dimensions available under the specification tab in the amazon ad.  OD of the cover is 14.18"; center of screw to opposing screw is 12.68"; thickness is 1.60"; diameter of the inner lip which fits inside the actual pipe is 11.35"

**Q: How to take the lid off? I only need the vent part to keep debris out of culvert.**
A: There are spots for Panhead screws to attach it, however it just slides into the pipe until it hits the lid. You should be able to remove, but it was quite a snug fit for the corrugated pipe I had.

**Q: Can this lid be used for a concrete septic tank?**
A: I did, I used it with a riser though

## Frequently Bought Together

- Polylok 12" Heavy Duty Cover/Lid for Corrugated Pipe (PN: 3004-C)
- Polylok 24" Heavy Duty Flat Cover/Lid for Corrugated Pipe (PN: 3008-WEST)

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**Shop now:** [https://www.desertcart.hr/products/93591981-polylok-12-heavy-duty-cover-lid-for-corrugated-pipe-pn](https://www.desertcart.hr/products/93591981-polylok-12-heavy-duty-cover-lid-for-corrugated-pipe-pn)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-09*