---
product_id: 286239537
title: "Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1)"
brand: "rat blockers"
price: "¥36719"
currency: JPY
in_stock: true
reviews_count: 5
category: "Rat Blockers"
url: https://www.desertcart.jp/products/286239537-rat-blockers-for-drains-for-6-inch-drains-145-150mm
store_origin: JP
region: Japan
---

# Fits 6-inch (145/150mm) clay & plastic drains Double non-return valves for max protection Rust & gnaw resistant stainless steel build Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1)

**Brand:** rat blockers
**Price:** ¥36719
**Availability:** ✅ In Stock

## Summary

> 🚫🐀 Lock out pests, let your drains flow freely!

## Quick Answers

- **What is this?** Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1) by rat blockers
- **How much does it cost?** ¥36719 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/286239537-rat-blockers-for-drains-for-6-inch-drains-145-150mm)

## Best For

- rat blockers enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Premium stainless steel resists rust and rodent gnawing for long-term security.
- • **Universal Fit:** Engineered to snugly fit both clay and plastic 6-inch drains with flexible sizing.
- • **Dual Valve Defense:** Twin flaps ensure free drainage while blocking every rat entry attempt.
- • **Peace of Mind Warranty:** Backed by a 12-month manufacturer’s warranty for guaranteed home defense.
- • **Hassle-Free Installation:** Quick and easy setup means immediate protection without plumbing headaches.

## Overview

The Rat Blockers for 6-inch drains feature dual non-return valves crafted from rust- and gnaw-resistant stainless steel, providing a permanent barrier against rodents while allowing free water flow. Designed to fit both clay and plastic pipes (145/150mm), this durable solution installs easily and comes with a 12-month warranty, ensuring reliable, long-lasting protection for your home drainage system.

## Description

Great prices on your favourite Gardening brands, and free delivery on eligible orders.

Review: Surface warter drain issue. - Since installing this product we have not heard any creatures. Very effective for what we needed. Highly recommended for keeping any uninvited guests out. Very easy to install, a little expensive but worth it. Looks like it will last for a long time.
Review: Well made - Great product seems well made hopefully it solves a problem.

## Features

- DOUBLE NON-RETURN Valves: Allowing Free Flow Drainage but Prevents Rat Entry. Please note: other cheaper alternatives only have 1 single valve which offers less protection
- PERMANENT RAT ENTRY SOLUTION: Our rat blocker is an immediate and permanent solution to stop the entry of rat/rodents
- RUST & GNAW RESISTANT: Created From Stainless Steel, Rust & Gnaw Resistant
- 12 MONTHS MANUFACTURE'S WARRANTY: Guaranteed Product Quality for Long Lasting Protection for Your Home and Drainage System
- SUITABLE FOR CLAY & PLASTIC DRAINS: Our rat blockers can fit in both clay and plastic-type pipes in 6″ size. Flexible Fitting for Drain Sizes (145/150mm)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08CM9XFWW |
| Best Sellers Rank | 68,978 in Garden ( See Top 100 in Garden ) 1,096 in Rodent Control |
| Customer Reviews | 4.3 4.3 out of 5 stars (10) |
| Date First Available | 6 July 2020 |
| Item display length | 13 centimetres |
| Manufacturer | Rat Blockers |
| Product Dimensions | 13 x 9.3 x 9.3 cm; 860 g |

## Images

![Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/21dc-MvPGkL.jpg)
![Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1) - Image 2](https://m.media-amazon.com/images/I/31YpxwzJDvL.jpg)
![Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1) - Image 3](https://m.media-amazon.com/images/I/31ukRiPb3pL.jpg)
![Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1) - Image 4](https://m.media-amazon.com/images/I/41Dpl-c+6dL.jpg)
![Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1) - Image 5](https://m.media-amazon.com/images/I/41bBuTuJaML.jpg)

## Available Options

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

## Questions & Answers

**Q: Can these be fitted to slightly bigger diameter pipe (6.3 inch inside diameter)? Thank you**
A: with a 0.3 inch adjustment, there is no problems there. You can pull the sides slightly for a better fitting.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Surface warter drain issue.
*by J***G on 16 November 2024*

Since installing this product we have not heard any creatures. Very effective for what we needed. Highly recommended for keeping any uninvited guests out. Very easy to install, a little expensive but worth it. Looks like it will last for a long time.

### ⭐⭐⭐⭐⭐ Well made
*by M***. on 31 October 2025*

Great product seems well made hopefully it solves a problem.

### ⭐⭐⭐⭐ Seems to be working correctly. Price is steep for what it is but appears to be doing its job
*by M***E on 5 November 2021*

East to install but expensive for what it is.

## Frequently Bought Together

- Rat Blockers for Drains - for 6 inch Drains (145/150mm) - Non-Return Valve, Twin Flaps (Pack of 1)
- Rat Blockers for Drains | Permanent Rat Prevention Valve & Rust Resistant Stainless Steel, Flexible Fitting 95mm - 105mm (Pack of 1)
- Roshield Rat Drain Guard | Stop Rats within Drainage & Properties | Rodent Flap Control & Prevention Proofing (Stainless Steel 4"/110mm)

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**Shop now:** [https://www.desertcart.jp/products/286239537-rat-blockers-for-drains-for-6-inch-drains-145-150mm](https://www.desertcart.jp/products/286239537-rat-blockers-for-drains-for-6-inch-drains-145-150mm)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-07*