---
product_id: 9285977
title: "4 In. x 4 In. Plastic to Plastic PVC Coupling - 1 Each"
brand: "fernco"
price: "S$19"
currency: SGD
in_stock: true
reviews_count: 13
category: "Fernco"
url: https://www.desertcart.sg/products/9285977-4-in-x-4-in-plastic-to-plastic-pvc-coupling
store_origin: SG
region: Singapore
---

# Compatible with cast iron, plastic & steel 4-inch flexible PVC coupling Proudly made in the USA 4 In. x 4 In. Plastic to Plastic PVC Coupling - 1 Each

**Brand:** fernco
**Price:** S$19
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect with confidence — the flexible coupling that keeps your pipes and projects flowing!

## Quick Answers

- **What is this?** 4 In. x 4 In. Plastic to Plastic PVC Coupling - 1 Each by fernco
- **How much does it cost?** S$19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/9285977-4-in-x-4-in-plastic-to-plastic-pvc-coupling)

## Best For

- fernco enthusiasts

## Why This Product

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

## Key Features

- • **American-Made Quality:** Crafted in the USA for unmatched durability and trust.
- • **Lightweight Yet Robust:** Only 16 ounces but engineered for heavy-duty plumbing tasks.
- • **Universal Compatibility:** Works flawlessly with cast iron, plastic, and steel pipes.
- • **Seamless 4-Inch Connection:** Effortlessly link diverse pipe materials with precision.
- • **Trusted by Pros & Homeowners:** 4.6-star rating from 372 users proves its reliability.

## Overview

The Fernco 4 In. x 4 In. Plastic to Plastic PVC Coupling is a versatile, flexible pipe connector designed for seamless integration with cast iron, plastic, and steel pipes. Made in the USA, it combines lightweight design with professional-grade durability, earning high customer satisfaction and trusted by both homeowners and industry experts.

## Description

Product Description Fernco P1056-44 Flexible PVC Pipe Coupling for Cast Iron, Plastic or Steel to Cast Iron, Plastic or Steel Connections From the Manufacturer Established in 1964, Fernco is a global leader in manufacturing high-quality flexible pipe couplings, drainage, and plumbing systems. Renowned for exceptional performance and reliability, Fernco products are trusted by homeowners and professionals alike. With a commitment to innovation and dependability, Fernco has earned a strong reputation for delivering superior solutions. As a proud USA manufacturer, Fernco is dedicated to maintaining the highest standards of production and engineering.

Review: Works Perfectly for an Unconventional Use - Have a high efficiency furnace, A/C unit that vents outside using PVC vent pipe. We had some yellow jackets get in the house and the only way they could get to the 2nd floor master bedroom had to be through the ductwork. Just to be sure, I purchased a very tight circular screen but needed a fernco-like device that not only fit over the end of the PVC vent pipe but with an inside diameter that would allow the hard metal circular screen to fit and stay put. This worked absolutely perfectly! I take it off during winter not only because the yellow jackets are no longer active but when running the furnace, the vent not only carries out combustion gases but due to it being high efficiency, water vapor. If I left it in place, the tight screening would accumulate the water, it would freeze, block the exit, and carbon monoxide is not my friend. Anyway, this Fernco worked perfectly for something it was not even intended to do.
Review: Ferncos Rule - It's a Fernco, used it on radon mitigation piping, great product.

## Features

- Made in United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQQU52 |
| Best Sellers Rank | #10,440 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #145 in Pipe Fittings |
| Brand | Fernco |
| Brand Name | Fernco |
| Color | Black |
| Connector Type | Coupling |
| Customer Reviews | 4.6 out of 5 stars 374 Reviews |
| Exterior Finish | Black |
| Global Trade Identification Number | 00018578000124 |
| Included Components | Fernco P1056-44 Flexible PVC Pipe Coupling |
| Item Dimensions | 5 x 5 x 4 inches |
| Item Highlight | Pipe Couplings, Flexible Pipe Couplings, PVC Pipe Fittings, Drain Connectors, Fernco P1056-44 Flexible Coupling |
| Item Type Name | Cast Iron, Plastic and Steel Pipe Flexible Coupling Connector Sewer and Drain Coupler Adapter |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 5 x 5 x 4 inches |
| Manufacturer | Fernco |
| Manufacturer Part Number | P1056-44 |
| Manufacturer Warranty Description | Warranty |
| Material | Polyvinyl Chloride |
| Material Type | Polyvinyl Chloride |
| Model Number | P1056-44 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Size | 4 Inch |
| Thread Size | thread.size |
| Thread Type | thread.type |
| UPC | 018578000124 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Fernco
- **Color:** Black
- **Connector Type:** Coupling
- **Exterior Finish:** Black
- **Item Weight:** 16 ounces
- **Item dimensions L x W x H:** 5 x 5 x 4 inches
- **Material:** Polyvinyl Chloride
- **Size:** 4 Inch
- **Thread Size:** thread.size
- **Thread Type:** thread.type

## Images

![4 In. x 4 In. Plastic to Plastic PVC Coupling - 1 Each - Image 1](https://m.media-amazon.com/images/I/71ZFaL9aZWL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Perfectly for an Unconventional Use
*by A***K on February 19, 2025*

Have a high efficiency furnace, A/C unit that vents outside using PVC vent pipe. We had some yellow jackets get in the house and the only way they could get to the 2nd floor master bedroom had to be through the ductwork. Just to be sure, I purchased a very tight circular screen but needed a fernco-like device that not only fit over the end of the PVC vent pipe but with an inside diameter that would allow the hard metal circular screen to fit and stay put. This worked absolutely perfectly! I take it off during winter not only because the yellow jackets are no longer active but when running the furnace, the vent not only carries out combustion gases but due to it being high efficiency, water vapor. If I left it in place, the tight screening would accumulate the water, it would freeze, block the exit, and carbon monoxide is not my friend. Anyway, this Fernco worked perfectly for something it was not even intended to do.

### ⭐⭐⭐⭐⭐ Ferncos Rule
*by R***H on September 1, 2026*

It's a Fernco, used it on radon mitigation piping, great product.

### ⭐⭐⭐⭐⭐ Made job much easier than using cement.
*by G***V on May 29, 2026*

So much easier than cement in tight places. Was quoted $1700 to replace part of drain pipe under house, did it myself for less than $50 and in about 3 hours.

## Frequently Bought Together

- Fernco P1056-44 Flexible PVC Pipe Coupling for Cast Iron, Plastic or Steel to Cast Iron, Plastic or Steel Connections
- Fernco 1056-43 Coupling Flex 4X3 No Metal
- Fernco 1056-33 Flexible Pipe Coupling 3” CI/Plastic/Steel to 3” CI/Plastic/Steel

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-10-24*