---
product_id: 729156524
title: "[20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6\"Face]"
brand: "laminaire"
price: "$133.11"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/729156524-20-x-4-duct-hole-vent-cover-aluminum-single-deflection
store_origin: US
region: United States of America
---

# Precise 21.6" x 5.6" fit 180° adjustable airflow control Durable rust-free AA6063 aluminum [20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face]

**Brand:** laminaire
**Price:** $133.11
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate your airflow game with style and precision!

## Quick Answers

- **What is this?** [20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face] by laminaire
- **How much does it cost?** $133.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/729156524-20-x-4-duct-hole-vent-cover-aluminum-single-deflection)

## Best For

- laminaire enthusiasts

## Why This Product

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

## Key Features

- • **Total Airflow Mastery:** Single deflection adjustable blades plus multi-shutter parallel damper let you control vertical and horizontal air direction with precision.
- • **Perfect Fit Every Time:** Designed with exact 21.6" x 5.6" dimensions to seamlessly cover 20" x 4" openings—ditch old measurements and upgrade your space.
- • **Hassle-Free Installation:** Includes galvanized steel cross-head screws tailored for wood and drywall—secure your vent cover in minutes.
- • **Sleek & Scratch-Resistant:** Electrostatic white powder-coat finish delivers a polished, modern look that resists scratches and wear.
- • **Built to Last & Lightweight:** Crafted from premium extruded AA6063 aluminum for rust-free durability and effortless installation.

## Overview

This 20" x 4" aluminum vent cover by Laminaire features a rust-resistant AA6063 build, adjustable vertical and horizontal airflow control with multi-shutter blades, and a sleek electrostatic white finish. Designed for easy installation and precise fit, it ensures efficient 180° air dispersion for wall or ceiling applications.

## Description

Aluminum supply grille with multi-shutter damper (L-VM) is an air supply grille by vertical walls, air supply direction can by ajustable setting direction of its blades, allowing to change the dispersion air flow, multi shutter damper allows to have control of air flow. USE It has domestic and commercial HVAC systems, it can be installed in bedrooms, meeting rooms, commercial premises, offices, corridors, and other spaces for which it is suitable.

## Features

- [Sizing Guide]: Ensure accurate fit by measuring your wall or ceiling opening before ordering. For this grille, the opening should be at least 20"W x 4"H. Avoid using old grille measurements. Always start with the Width (W) followed by the Height (H). This grille comes with a front end frame designed to overlap at wall or ceiling junctions, with an overall external dimension of 21.6"W x 5.6"H.
- [High-Quality Construction]: Made of extruded aluminum AA6063, this vent provides rust-free high-grade aluminum, ensuring the diffuser is sturdy, light, and easy to install. Perfect as a wall air vent cover.
- [Versatile Airflow Control]: With single deflection adjustable vertical blades, you can graduate the air dispersion to both the right and left. The Multi-Shutter Parallel Blade Damper offers full control over vertical and horizontal airflow directions, making it a versatile air vent cover for walls.
- [Stylish Finish]: Coated in a high-resistance electrostatic white paint finish, this vent cover ensures a powder-coat finish that's smooth, shiny, and scratch-resistant, ideal for those seeking wall heat vent covers with a polished look.
- [Easy Installation]: All our grilles come with galvanized steel cross-head screws (5/32" diameter x 1 1/2" length) with a white color head, specially designed for wood and drywall. The screws ensure this wall vent cover fits securely. [Efficient Air Dispersion]: The design allows for a 180° direction of the airflow, typically installed at the top of the wall to ensure high airflow.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Laminaire |
| Package Dimensions | 54.99 x 13.97 x 3.81 cm; 522 g |
| Item model number | L-VM 20" x 4" |
| Size | 20” X 4” |
| Colour | White |
| Material | Aluminum |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 522 g |

## Images

![[20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face] - Image 1](https://m.media-amazon.com/images/I/7181+JQSwXL.jpg)
![[20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face] - Image 2](https://m.media-amazon.com/images/I/71mMoBMBh2L.jpg)
![[20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face] - Image 3](https://m.media-amazon.com/images/I/71lEISabzbL.jpg)
![[20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face] - Image 4](https://m.media-amazon.com/images/I/71aq4+oG90L.jpg)
![[20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face] - Image 5](https://m.media-amazon.com/images/I/71Up8N+SpfL.jpg)

## Available Options

This product comes in different **Size name** options.

## Frequently Bought Together

- [20 x 4 Duct Hole] Vent Cover. Aluminum Single Deflection Adjustable Air Supply Sidewall or Ceiling Grille Register with Multi-Shutter Parallel Blade Damper. Blades are Movable [21.6 x 5.6"Face]
- Kair MultiFan In Line Fan 150mm with Timer

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-02*