---
product_id: 475713244
title: "4\" Round Flat"
brand: "one stop outdoor"
price: "₩50785"
currency: KRW
in_stock: null
reviews_count: 12
category: "One Stop Outdoor"
url: https://www.desertcart.kr/products/475713244-4-round-flat
store_origin: KR
region: South Korea
---

# Fits 4" SDR & Triple Wall Pipes UV-Inhibited HDPE for Sun Protection 750 lbs Load, Pedestrian & Wheelchair Safe 4" Round Flat

**Brand:** one stop outdoor
**Price:** ₩50785
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Secure your flow with style — the 4" Round Flat that keeps your drainage game strong!

## Quick Answers

- **What is this?** 4" Round Flat by one stop outdoor
- **How much does it cost?** ₩50785 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/475713244-4-round-flat)

## Best For

- one stop outdoor enthusiasts

## Why This Product

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

## Key Features

- • **Proudly USA Made:** Manufactured domestically with premium materials, ensuring top-tier quality and supporting local craftsmanship.
- • **Universal 4" Fit:** Precision engineered to fit 4" SDR sewer, triple wall, and corrugated pipes—no guesswork, just seamless compatibility.
- • **Heavy-Duty Load Capacity:** Supports up to 750 lbs, making it perfect for pedestrian, bicycle, and wheelchair traffic without compromise.
- • **Sun-Resistant Durability:** Crafted from UV-inhibited HDPE, this grate stays strong and vibrant under harsh outdoor conditions—built to last.
- • **Quick & Clean Installation:** Snap it on in minutes—no special tools needed, blending effortlessly into your landscape for a sleek, modern finish.

## Overview

The 4" Round Flat Drain Grate Cover is a premium, USA-made drainage solution designed to fit 4" SDR sewer, triple wall, and corrugated pipes. Constructed from UV-inhibited high-density polyethylene, it offers superior durability against sun damage and supports up to 750 lbs, making it safe for pedestrian, bicycle, and wheelchair traffic. Easy to install and compatible with most major brands, this grate combines functionality with a sleek, modern design to enhance any outdoor drainage system.

## Description

Buy Premium USA Made 4" Inch Green Outdoor Round Flat Drain Grate Cover - Fits 4" Inch SDR Sewer & Drain Pipe/Fittings, Also Triple Wall & Corrugated Pipe 4" Not for Regular PVC (Green): Pipe Fittings - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Fits 3 3/4” pipe with some slight modification. - If you’re looking for covers to fit 3 3/4” corrugated drain pipe these will work. Just note that when fitting into the male end of the pipe you may have to heat and stretch the pipe a few mm to insert this drain cover. But it will fit!
Review: Love it - What an upgrade from those nasty metal yard drain covers! So sturdy, easy to install, comes in several colors, is not expensive and just stick in in the pipe. Tight fit so no chance of nature causing it to come out! Highly recommend this item!

## Features

- FITS : Fits 4" Inch SDR Sewer & Drain Pipe SDR 35 / Fittings, Also Fits Triple Wall Pipe & Corrugated Pipe 4" - PVC FITTINGS MUST HAVE BELLED END OR THEY WILL NOT FIT
- PREMIUM QUALITY - manufactured from a structurally foamed High Density Polyethylene (HDPE) with a UV inhibitor to reduce sun damage. This grate is designed with large opening slots for maximum flow while still preventing large debris from entering the drainage system. Capable of withstanding pedestrian, bicycle and wheelchair traffic.
- USA MADE! - PROUDLY MADE IN THE USA
- EASY INSTALL - Precision engineered and manufactured to attach directly to Sewer and Drain Pipe and Fittings, Triple Wall Pipe and Corrugated Pipe. Easy to use, installs in minutes and blends well with the landscape.
- FITS MOST BRANDS - COMPATIBLE WITH NDS, DURA, ETC.
- APPLICATION - Typical application would be for direct attachment to Drainage Pipe where a catch basin is not appropriate or feasible. Available in 3″, 4″ and 6″ diameters.
- ADA compliant - recommended for pedestrians, bicycles, and wheelchair traffic
- MAX LOAD - 750lbs Maximum load based on weight uniformly applied across entire grate surface.
- NOT FOR REGULAR PVC

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09WZH7ZC8 |
| Batteries required | No |
| Best Sellers Rank | #36,184 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #940 in Pipe Fittings |
| Brand | One Stop Outdoor |
| Color | Green |
| Customer Reviews | 4.6 4.6 out of 5 stars (263) |
| Finish Type | Brushed |
| Finish types | Brushed |
| Global Trade Identification Number | 00850040739145 |
| Item Weight | 2.89 ounces |
| Item model number | oso-3dgcf |
| Manufacturer | One Stop Outdoor |
| Material | Polyethylene (PE) |
| Number of Items | 1 |
| Product Dimensions | 4"W x 4"H |
| Special Feature | Premium |
| Style | Modern |
| UPC | 850040739145 |

## Product Details

- **Brand:** One Stop Outdoor
- **Color:** Green
- **Finish Type:** Brushed
- **Material:** Polyethylene (PE)
- **Product Dimensions:** 4"W x 4"H

## Images

![4" Round Flat - Image 1](https://m.media-amazon.com/images/I/41PHHqXa5hL.jpg)
![4" Round Flat - Image 2](https://m.media-amazon.com/images/I/41fG6abcjTL.jpg)
![4" Round Flat - Image 3](https://m.media-amazon.com/images/I/51hC076RzxL.jpg)
![4" Round Flat - Image 4](https://m.media-amazon.com/images/I/51zO2FnqfLL.jpg)
![4" Round Flat - Image 5](https://m.media-amazon.com/images/I/613zvyKDS5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fits 3 3/4” pipe with some slight modification.
*by J***R on September 25, 2025*

If you’re looking for covers to fit 3 3/4” corrugated drain pipe these will work. Just note that when fitting into the male end of the pipe you may have to heat and stretch the pipe a few mm to insert this drain cover. But it will fit!

### ⭐⭐⭐⭐⭐ Love it
*by N***B on November 19, 2022*

What an upgrade from those nasty metal yard drain covers! So sturdy, easy to install, comes in several colors, is not expensive and just stick in in the pipe. Tight fit so no chance of nature causing it to come out! Highly recommend this item!

### ⭐⭐⭐⭐⭐ Gets the job done
*by J***P on August 3, 2025*

Looks good and easy to install

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**Shop now:** [https://www.desertcart.kr/products/475713244-4-round-flat](https://www.desertcart.kr/products/475713244-4-round-flat)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-25*