---
product_id: 444319158
title: "1056-64, Flexible Coupling, For Pipe Size 6\" x 4\""
brand: "fernco"
price: "€ 123.11"
currency: EUR
in_stock: true
reviews_count: 5
category: "Fernco"
url: https://www.desertcart.sk/products/444319158-1056-64-flexible-coupling-for-pipe-size-6-x-4
store_origin: SK
region: Slovakia
---

# Quick, no-mess installation Fits 6" x 4" pipes seamlessly Corrosion-resistant stainless steel clamps 1056-64, Flexible Coupling, For Pipe Size 6" x 4"

**Brand:** fernco
**Price:** € 123.11
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect with confidence—plumbing made flexible and flawless!

## Quick Answers

- **What is this?** 1056-64, Flexible Coupling, For Pipe Size 6" x 4" by fernco
- **How much does it cost?** € 123.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/444319158-1056-64-flexible-coupling-for-pipe-size-6-x-4)

## 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

- • **Built to Last:** Elastomeric PVC ensures leak-proof, chemical & sewer gas resistance
- • **Universal Flex Fit:** Connects PVC, cast iron, copper, steel & lead pipes effortlessly
- • **Pro-Grade Reliability:** ASTM, CSA & UPC certified for peace of mind on every project
- • **Tool-Ready Installation:** Just slide on & tighten clamps with screwdriver or wrench—no glue needed
- • **Made in the USA Since 1964:** Trusted legacy of quality and innovation in plumbing couplings

## Overview

The Fernco 1056-64 flexible coupling is a professional-grade plumbing connector designed to join 6" and 4" pipes of various materials including PVC, cast iron, copper, steel, and lead. Made from durable elastomeric polyvinyl chloride with corrosion-resistant stainless steel clamps, it offers a leak-proof, chemical-resistant seal without the need for messy primers or glues. Certified to ASTM, CSA, and UPC standards, this coupling ensures quick, reliable installation and long-lasting performance, making it the go-to choice for modern plumbing projects.

## Description

Choose the couplings that the pros use for your next drain, waste or vent project. The Fernco P1056-64 flexible PVC coupling quickly connects plastic (PVC, CPVC, abs, smooth wall HDPE), cast iron, copper, steel or lead pipes. Installation is as easy as sliding the coupling on and torquing the stainless-steel bands down for a leak-proof connection. Whether you're adding a new laundry sink, replacing rusted cast iron pipe, or adding a new bathroom, Fernco couplers make plumbing projects a breeze. Before you grab the primer and glue - be sure and look for the right Fernco coupling. Fernco couplings have been proudly manufactured in the USA since 1964 and are made of the highest quality elastomeric polyvinyl chloride and corrosion-resistant, rust-proof clamps. With a reputation for quality, innovation, and reliable performance, you can trust Fernco as the global leader in flexible plumbing couplings.

Review: Not made cheap or anything, good quality
Review: Good quality product.

## Features

- UNMATCHED QUALITY & PERFORMANCE: Built to last the life of the plumbing system, Fernco couplings are made from elastomeric polyvinyl chloride for a strong, leak-proof fitting that’s resistant to chemicals and sewer gases.
- FLEXIBLE FIT: To choose the right coupling, measure the outside diameter (OD) of your pipe. This coupling has an internal diameter (ID) of 4.46” and fits pipe ODs between 4.10" - 4.60" on one end with an internal diameter (ID) of 6.61" that fits pipe Ods between 6.25" - 6.85" on the other end.
- CONNECT VARIOUS PIPE TYPES: The Fernco P1056-64 coupling connects Plastic (PVC, ABS, CPVC, Smooth Wall HDPE), Cast Iron, Copper, Steel or Lead Pipe for a watertight joint. For sewer and drain, waste and vent piping.
- NO-MESS INSTALLATION: Fernco couplings are easy to install without the hassle of messy primers, glues and their unwanted odors.
- SPECS & CODES: Conforms to ASTM D 5926, C 1173 CSA B602 and UPC Approved. 300 stainless steel clamps are corrosion-resistant, rustproof and make installing quick and easy with just a screwdriver, nut driver or torque wrench.
- Stock coupling
- Use to connect any two pipes
- 6.61-Inch x 4.46-Inch x 5.75-Inch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQM0JC |
| Brand | Fernco |
| Colour | black |
| Connector Type | Coupling |
| Department | Unisex-Adult |
| Exterior Finish | black |
| Generic Name | Flexible PVC Pipe Coupling |
| Global Trade Identification Number | 00018578000131, 00018578015586 |
| Included Components | P1056-64 Flexible PVC Pipe Coupling |
| Item Dimensions LxWxH | 12.2 x 17.3 x 14.1 Centimeters |
| Item Weight | 272 g |
| Item dimensions L x W x H | 12.2 x 17.3 x 14.1 Centimeters |
| Item model number | 1056-64 |
| Manufacturer | Fernco Inc. |
| Material | Polyvinyl Chloride Stainless Steel |
| Net Quantity | 1.0 Count |
| Number of Pieces | 1 |
| Product Dimensions | 12.19 x 17.3 x 14.12 cm; 272.16 g |
| Size | 6 Inch |
| Thread Size | 6.85 inches |
| UPC | 018578015586 018578000131 |

## Product Details

- **Brand:** Fernco
- **Colour:** black
- **Connector Type:** Coupling
- **Exterior Finish:** black
- **Item Weight:** 0.6 Pounds
- **Item dimensions L x W x H:** 12.2 x 17.3 x 14.1 Centimeters
- **Material:** Polyvinyl Chloride Stainless Steel
- **Number of Pieces:** 1
- **Size:** 6 Inch
- **Thread Size:** 6.85 inches

## Images

![1056-64, Flexible Coupling, For Pipe Size 6" x 4" - Image 1](https://m.media-amazon.com/images/I/71tRnYFGtLL.jpg)

## Questions & Answers

**Q: will this work on connecting a 6" cast iron to a 4" clay sewer line??**
A: No, the 4" side on the P1056-64 is a nominal 4.46" inside diameter according to Fernco so it too small for 4" clay. The Fernco 1002-46 is designed for 6" PVC/cast iron to 4" clay and according to Fernco.com has a 6.39" by 5.18" inside diameter. Haven't worked with clay pipe but according to the sizing information from the Fernco site, any adapter with a clay connection requires that side of the adapter to be sized just for clay. Hope this helps.

**Q: Will this work on connecting a 6" dsw sch 40 pvc pipe to a sdr 35 4" pipe?**
A: It will work but because sdr 35 is thinner wall than sch 40 be careful not to over tighten the connection to the 35.

**Q: What are the inner diameter dimensions?**
A: Its difficult to measure as it is flexible and not perfectly round when not installed on a pipe.  As close as I can get the inside diameters are 4 1/2 and 6 1/2 inches.  Fits 4 inch schedule 40 PVC and the top fitting on a IBC container which is what I used it for.

**Q: 12"coupling reduce to 6"**
A: No. Mine fit loosely on an 8" to 6".

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***N on 29 September 2024*

Not made cheap or anything, good quality

### ⭐⭐⭐⭐ Review
*by N***L on 6 April 2015*

Good quality product.

### ⭐⭐⭐⭐⭐ Review
*by M***D on 7 May 2025*

These 4”x6” runner boots work great. I am using them at the top inlets of a water harvesting system that utilizes 4 inch -pvc pipe schedule 40. The 4 inch end of the boot slips onto the pvc with no problem. The boot comes with two stainless steel clamps that fit each end of it. I used the 6 inch end to secure screen to filter out debris and keep it from entering the system. The boots are durable, the size is accurate, and they are a good value for the money. I would recommend them.

## Frequently Bought Together

- Fernco 1056-64 6" x 4" Flexible Pipe Coupling (Connects Cast Iron, PVC, Steel or Lead)
- Fernco 1056-66 6-in. Flexible PVC Pipe Coupling for Cast Iron/Plastic/Steel Plumbing Connections in Black
- Fernco 1056-86 Flexible Pipe Coupling 8” CI/Plastic/Steel to 6” CI/Plastic/Steel

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-14*