# VENTS GRM450X450 Gravity Shutter for Ventilation Fan 450 x 450 mm

**URL:** https://aio.lv/en/product--vents-grm450x450--12479911
**Data updated:** 2026-05-22 07:20 (EEST)
**Category:** Ventilation Filters
**Manufacturer:** VENTS
**Manufacturer code:** GRM450X450
**EAN:** 4824032002933
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 53.49 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 44.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--vents-grm450x450--12479911

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The VENTS GRM450X450 is an external gravity shutter designed for ventilation systems. Measuring 450 x 450 mm, this shutter automatically opens when the fan is running and closes when it is turned off, preventing backdraft and the ingress of debris or insects. It is a durable solution for wall-mounted industrial or domestic ventilation fans, ensuring efficient airflow control and protection against outdoor weather conditions.

## Long description

The VENTS GRM450X450 is a high-quality external gravity shutter specifically engineered for ventilation systems requiring reliable backdraft protection. Designed for wall-mounted installation, this shutter measures 450 x 450 mm and serves as an essential component for both domestic and industrial ventilation setups. It functions automatically by utilizing the airflow generated by the fan to open the louvers during operation and closing them securely via gravity once the fan is switched off.
Advantages
This gravity shutter offers a robust and maintenance-free solution for managing airflow in various environments. Its primary advantage lies in its automatic operation, which requires no electrical connection or manual intervention, ensuring seamless integration with existing fan systems. The durable construction provides excellent resistance against outdoor weather conditions, effectively preventing backdrafts, debris, and insects from entering the building through the ventilation duct when the fan is inactive.
Suitable for
Industrial ventilation systems
Domestic wall-mounted exhaust fans
Commercial kitchen or workshop ventilation
Buildings requiring protection against outdoor elements
When it may not be suitable
This shutter is not designed for use in high-pressure ventilation systems where the fan power is insufficient to lift the gravity-operated louvers. It is also not intended for installation in ducts that require airtight sealing, as gravity shutters are designed for airflow regulation rather than hermetic closure.
Key specifications
Dimensions: 450 x 450 mm
Operation: Automatic gravity-based
Mounting: Wall-mounted
Function: Backdraft prevention
Compatibility: Suitable for industrial and domestic fans
How to use
The shutter should be installed on the exterior wall directly over the ventilation fan outlet. Ensure the frame is mounted level and securely fastened to the wall surface to allow the louvers to move freely without obstruction. Once installed, the shutter will automatically respond to the air pressure created by the fan, opening when the fan is active and closing immediately when the airflow ceases.
What to consider before purchase
Verify the dimensions of your existing fan outlet to ensure a proper fit
Ensure the wall surface is flat for secure mounting
Check that the fan has sufficient power to open the shutter blades
Usage recommendations
Regularly inspect the shutter to ensure that the louvers remain free of dust, grease, or debris, which could impede their movement and affect the efficiency of your ventilation system.

## FAQ

### How much does the VENTS GRM450X450 Gravity Shutter 450 x 450 mm cost, and is it available for purchase?

The price is 53.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 16.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All VENTS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized VENTS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12479911/68803238_large.webp