---
product_id: 98015520
title: "21\" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair"
brand: "knobonly"
price: "HK$6911"
currency: HKD
in_stock: true
reviews_count: 9
url: https://www.desertcart.hk/products/98015520-21-drawer-slides-full-extension-soft-close-85-lb-load
store_origin: HK
region: Hong Kong
---

# Adjustable Locking Device 85 lb Load Capacity Easy Installation 21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair

**Brand:** knobonly
**Price:** HK$6911
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade Your Storage Game with Style!

## Quick Answers

- **What is this?** 21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair by knobonly
- **How much does it cost?** HK$6911 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/98015520-21-drawer-slides-full-extension-soft-close-85-lb-load)

## Best For

- knobonly enthusiasts

## Why This Product

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

## Key Features

- • **Hassle-Free Setup:** Includes detailed instructions and all mounting hardware for quick installation.
- • **Durable Construction:** Crafted from high-grade zinc plated cold rolled steel for long-lasting use.
- • **Whisper-Quiet Closure:** Experience the luxury of soft-close functionality for a serene environment.
- • **Heavy-Duty Performance:** Engineered to support up to 85 lbs, perfect for all your storage needs.
- • **Universal Compatibility:** Designed to fit most drawer types, making it ideal for any project.

## Overview

These 10 Pair 18" Undermount Drawer Slides are designed for heavy-duty use, supporting up to 85 lbs. Made from high-grade zinc plated cold rolled steel, they feature a soft-close mechanism for quiet operation. Ideal for various drawer types, they come with an adjustable locking device and all necessary mounting hardware for easy installation.

## Description

21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair

## Features

- Brand owner:(QQ2218205187)★Made from high-grade cold rolled steel, zinc plated, steel construction full extension slides are rated for heavy-duty use(loads up to 85 lbs), featuring soft-close functionality to close any drawer softly and silently
- Brand owner:(QQ2218205187)★Size: Length:21 inch; Weight Capacity: 85LB, adjustable locking device, detailed instructions and mounting hardware included for easy installation
- Brand owner:(QQ2218205187)★These slides are compatible with most major drawer and cabinet types(undermount) and are ideal for new construction, remodeling and replacement projects
- Brand owner:(QQ2218205187)★Fits face frame or framless application. These versatile 21” drawer slides can be used for kitchen or bathroom drawers, office desks, or other personal storage areas.
- Brand owner:(QQ2218205187)★Refund or replacement for quality problem, please feel free to contact us if you have you any question with your order, we will solve it in 24 hours

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Weight Capacity Maximum | 85 Pounds |
| Drawer Type | Storage |
| Mounting Type | Side Mount |
| Finish Types | Steel |
| Color | Silver |
| Material Type | Alloy Steel |

## Product Details

- **Color:** Silver
- **Material:** Alloy Steel
- **Brand:** Knobonly
- **Finish Type:** Steel
- **Mounting Type:** Side Mount

## Images

![21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair - Image 1](https://m.media-amazon.com/images/I/61VXOH915CL.jpg)
![21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair - Image 2](https://m.media-amazon.com/images/I/61rFJ6LulNL.jpg)
![21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair - Image 3](https://m.media-amazon.com/images/I/61uhGaJy7mL.jpg)
![21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair - Image 4](https://m.media-amazon.com/images/I/71jL4en8dzL.jpg)
![21" Drawer Slides Full Extension Soft Close, 85 lb Load Capacity, Plated Cold Rolled Steel, Concealed Drawer Rails, 1 Pair - Image 5](https://m.media-amazon.com/images/I/71s6rYtdFML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Sturdy
  

*by S***. on Reviewed in the United States on October 4, 2021*

Takes some work to install, but very strong and work well for pull out shelves I built.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works well if you have the right type of cabinet
  

*by J***Y on Reviewed in the United States on July 7, 2022*

I used this to replace a soft close that had some parts missing (I accidentally tossed?) for a new RTA cabinet.This was the same exact match. The guides are a good heavy quality metal. The directions are basic and could be more detailed for some but I already knew how it installed. These do need space underneath the drawer to attach or otherwise you might need the side attachment soft close hardware. Therefore, check your cabinets. If you have an older style cabinet it may not work. This worked really well for me and I had it installed in 10 minutes and the cabinet drawer works well now.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Worked perfectly in my heavy drawer
  

*by S***Y on Reviewed in the United States on October 6, 2021*

If your drawer is heavy you definitely want these slides.  But they are kind of difficult to install & get them lined up.

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**Shop now:** [https://www.desertcart.hk/products/98015520-21-drawer-slides-full-extension-soft-close-85-lb-load](https://www.desertcart.hk/products/98015520-21-drawer-slides-full-extension-soft-close-85-lb-load)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-18*