---
product_id: 193897497
title: "Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21\")"
brand: "beam lighting plastics your diffuser source"
price: "฿3146"
currency: THB
in_stock: true
reviews_count: 8
category: "Beam Lighting Plastics Your Diffuser Source"
url: https://www.desertcart.co.th/products/193897497-beam-lighting-under-cabinet-light-cover-replacement-white-ribbed-acrylic
store_origin: TH
region: Thailand
---

# 21-inch curved acrylic diffuser Easy snap-in installation Proudly American made Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21")

**Brand:** beam lighting plastics your diffuser source
**Price:** ฿3146
**Availability:** ✅ In Stock

## Summary

> 💡 Illuminate your space with effortless style and lasting quality!

## Quick Answers

- **What is this?** Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21") by beam lighting plastics your diffuser source
- **How much does it cost?** ฿3146 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/193897497-beam-lighting-under-cabinet-light-cover-replacement-white-ribbed-acrylic)

## Best For

- beam lighting plastics your diffuser source enthusiasts

## Why This Product

- Trusted beam lighting plastics your diffuser source brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Room Ready:** Ideal for kitchens, bathrooms, closets, and any space craving clean, bright illumination.
- • **Durable Ribbed Acrylic:** Built to last with premium polyacrylate that resists yellowing and wear.
- • **Seamless 21" Curved Design:** Perfectly diffuses light for a sleek, modern under-cabinet glow.
- • **Authentically American Made:** Support quality craftsmanship with a product designed and manufactured in the USA.
- • **Effortless Snap-In Mounting:** No hassle, no tools—just snap it in and elevate your space instantly.

## Overview

The Beam Lighting Under Cabinet Light Cover Replacement is a 21-inch curved white ribbed acrylic diffuser designed to retrofit and enhance under-cabinet fluorescent lighting. Made from durable polyacrylate, it offers easy snap-in installation and a clean, modern light diffusion. Perfect for kitchens, bathrooms, and closets, this American-made cover combines vintage charm with contemporary durability, ensuring your lighting looks fresh and performs flawlessly.

## Description

Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21") - desertcart.com

Review: Great option for retrofitting! - This came very close to perfectly fitting a legacy 18 inch fluorescent under cabinet light. The ballast went out, no replacement could be ordered. I acquired a 24 inch LED light strip, stripped off the ends, peeled the adhesive back and applied 18” against the light’s metal frame, trimmed off the last 6” and wired it into the Romex home wiring ends. As I mentioned it was a close but not a perfect fit. To avoid a ton of purchases and returns of other similar light diffusers, I applied double sided adhesive tape (3x 1/4 inch pieces against the light’s outer metal frame; and to attach the inner diffuser edge against the frame. The diffuser now easily removes, reinstalls and it stays in place! QUALITY: solid FUNCTION: easy to install, even close fits can work out with minor imagination! The diffuser allowed the light through without dimming it too much FIT: VERY close to original PRICE: Reasonable
Review: Fits perfectly!! - I've been looking for under the cabinet fluorescent light covers for years. Nowhere has them and everyone that I can find is either too short doesn't fit or made of crappy material. These came delivered in a short time in perfect condition the plastic looks great they look like they would have originally out of the box in 1960 with these ballasts. I could not be happier with the outcome and I will be buying these again if ever anything were to happen to them.

## Features

- 100% brand new and high quality
- Made of acrylic, durable and practical to use
- Perfect for lighting your kitchen, living room, bedroom, bathroom and other places
- Easy to install, just need to screw the lamp holder into the original socket

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06Y6D5WXZ |
| Assembly Required | No |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #15,388 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #147 in Under-Counter Light Fixtures |
| Brand | BEAM Lighting Plastics Your Diffuser Source |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,765) |
| Date First Available | April 11, 2017 |
| Finish Type | Linear Ribbed |
| Finish types | Linear Ribbed |
| Included Components | Under-Cabinet Lighting Cover |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.2 ounces |
| Item model number | WS-320 |
| Light Direction | Fluorescent |
| Manufacturer | BEAM Lighting Plastics Your Diffuser Source |
| Material | Polyacrylate |
| Mounting Type | Snap in |
| Number of Items | 1 |
| Number of Lights | 1 |
| Number of Pieces | 1 |
| Part Number | 320 |
| Pattern | Solid |
| Plug Format | A- US style |
| Power Source | DC |
| Product Dimensions | 21"W x 21"H |
| Recommended Uses For Product | Kitchen, Closet, Bathroom |
| Shade Color | White |
| Shade Material | Acrylic |
| Shape | Corner |
| Size | 21" |
| Special Feature | American Made |
| Special Features | American Made |
| Specific Uses | Cabinet |
| Style | Curved |
| Switch Style | Push Button |
| Type of Bulb | Fluorescent |
| UPC | 685642907988 |
| Voltage | 0.01 Volts |

## Product Details

- **Brand:** BEAM Lighting Plastics Your Diffuser Source
- **Color:** White
- **Finish Type:** Linear Ribbed
- **Material:** Polyacrylate
- **Mounting Type:** Snap in
- **Pattern:** Solid
- **Product Dimensions:** 21"W x 21"H
- **Shape:** Corner
- **Special Feature:** American Made
- **Style:** Curved

## Images

![Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21") - Image 1](https://m.media-amazon.com/images/I/31WtZ5Yhm2L.jpg)
![Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21") - Image 2](https://m.media-amazon.com/images/I/41JLzPrHt4L.jpg)
![Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21") - Image 3](https://m.media-amazon.com/images/I/41Ys1yrxKuL.jpg)
![Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21") - Image 4](https://m.media-amazon.com/images/I/41g9Z5gqfrL.jpg)
![Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21") - Image 5](https://m.media-amazon.com/images/I/51DBQUWosgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great option for retrofitting!
*by H***S on October 1, 2025*

This came very close to perfectly fitting a legacy 18 inch fluorescent under cabinet light. The ballast went out, no replacement could be ordered. I acquired a 24 inch LED light strip, stripped off the ends, peeled the adhesive back and applied 18” against the light’s metal frame, trimmed off the last 6” and wired it into the Romex home wiring ends. As I mentioned it was a close but not a perfect fit. To avoid a ton of purchases and returns of other similar light diffusers, I applied double sided adhesive tape (3x 1/4 inch pieces against the light’s outer metal frame; and to attach the inner diffuser edge against the frame. The diffuser now easily removes, reinstalls and it stays in place! QUALITY: solid FUNCTION: easy to install, even close fits can work out with minor imagination! The diffuser allowed the light through without dimming it too much FIT: VERY close to original PRICE: Reasonable

### ⭐⭐⭐⭐⭐ Fits perfectly!!
*by F***H on January 20, 2026*

I've been looking for under the cabinet fluorescent light covers for years. Nowhere has them and everyone that I can find is either too short doesn't fit or made of crappy material. These came delivered in a short time in perfect condition the plastic looks great they look like they would have originally out of the box in 1960 with these ballasts. I could not be happier with the outcome and I will be buying these again if ever anything were to happen to them.

### ⭐⭐⭐⭐⭐ Great Service
*by A***R on January 10, 2026*

The cover fit perfectly. It was a little tricky installing it. I would order from this company again.

## Frequently Bought Together

- Beam Lighting Under Cabinet Light Cover Replacement | White Ribbed Acrylic Diffuser (Curved, 21")
- F8T5 Flourescent Light Bulbs - 12 inches Under Cabinet Bulb - Cool White 4100k 8 Watt Tube Bulb - Pack of 6
- KOR (Pack of 6) F8T5/CW - T5 Fluorescent 4100K Cool White - 8 Watt - 12" Super Long Life Light Bulbs

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**Shop now:** [https://www.desertcart.co.th/products/193897497-beam-lighting-under-cabinet-light-cover-replacement-white-ribbed-acrylic](https://www.desertcart.co.th/products/193897497-beam-lighting-under-cabinet-light-cover-replacement-white-ribbed-acrylic)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-06*