---
product_id: 155294139
title: "Knobonly 6 Pair 21\" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity"
brand: "knobonly"
price: "AR$887929"
currency: ARS
in_stock: true
url: https://www.desertcart.com.ar/products/155294139-knobonly-6-pair-21-soft-close-drawer-rails-full-extension
store_origin: AR
region: Argentina
---

# 21" Length Zinc Plated 85 lb Capacity Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity

**Brand:** knobonly
**Price:** AR$887929
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade Your Storage Game with Style!

## Quick Answers

- **What is this?** Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity by knobonly
- **How much does it cost?** AR$887929 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/155294139-knobonly-6-pair-21-soft-close-drawer-rails-full-extension)

## 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

- • **Easy Installation:** Includes detailed instructions and all necessary mounting hardware for a hassle-free setup.
- • **Durable Construction:** Crafted from high-grade cold rolled steel for long-lasting performance and reliability.
- • **Heavy-Duty Performance:** Engineered to support up to 85 lbs, these slides are perfect for all your storage needs.
- • **Smooth & Silent Closure:** Experience the luxury of soft-close functionality that ensures your drawers close gently and quietly.
- • **Versatile Compatibility:** Designed to fit most drawer types, making them ideal for kitchens, bathrooms, and offices.

## Overview

The 6 Pair 21" Soft Close Drawer Rails are designed for heavy-duty use, supporting up to 85 lbs. Made from high-grade cold rolled steel with a zinc-plated finish, these full extension undermount slides offer smooth and silent closure. Ideal for various applications, they come with adjustable locking devices and all necessary mounting hardware for easy installation.

## Description

Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity

## Features

- Brand ower:(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 ower:(QQ2218205187) ★Size: Length:21 inch; Weight Capacity: 85LB, adjustable locking device, detailed instructions and mounting hardware included for easy installation
- Brand ower:(QQ2218205187) ★These slides are compatible with most major drawer and cabinet types(undermount) and are ideal for new construction, remodeling and replacement projects
- Brand ower:(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 ower:(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 Limit | 85 Pounds |
| Drawer Type | Storage |
| Manufacturer | Knobonly |
| UPC | 710328084179 |
| Part Number | UP-533H-LF-DSHH-6Pair |
| Item Weight | 37.7 pounds |
| Package Dimensions | 26.25 x 9 x 6 inches |
| Item model number | UP-533H-LF-DSHH-6Pair |
| Finish | Zinc Plated |
| Item Package Quantity | 6 |
| Maximum Weight Capacity | 85 Pounds |
| Batteries Required? | No |

## Product Details

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

## Images

![Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity - Image 1](https://m.media-amazon.com/images/I/61VXOH915CL.jpg)
![Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity - Image 2](https://m.media-amazon.com/images/I/61rFJ6LulNL.jpg)
![Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity - Image 3](https://m.media-amazon.com/images/I/61uhGaJy7mL.jpg)
![Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity - Image 4](https://m.media-amazon.com/images/I/71jL4en8dzL.jpg)
![Knobonly 6 Pair 21" Soft Close Drawer Rails Full Extension, Undermount Zinc Plated Drawer Slides, Mounting Screws and Adjustable Locking Device Included, 85 lb Load Capacity - Image 5](https://m.media-amazon.com/images/I/71s6rYtdFML.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.ar/products/155294139-knobonly-6-pair-21-soft-close-drawer-rails-full-extension](https://www.desertcart.com.ar/products/155294139-knobonly-6-pair-21-soft-close-drawer-rails-full-extension)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-01-29*