# ALNOR DAOS-200 Return Damper

**URL:** https://aio.lv/en/product--alnor-daos-200--4907254
**Data updated:** 2026-06-10 09:32 (EEST)
**Category:** Ventilation Filters
**Manufacturer:** ALNOR
**Manufacturer code:** DAOS-200
**EAN:** 4772013178064
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alnor-daos-200--4907254

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.89 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The ALNOR DAOS-200 is a high-quality return damper designed for ventilation systems. This component effectively regulates airflow and prevents backflow in ductwork, ensuring optimal system performance. Constructed for durability and precise operation, it is an essential element for maintaining balanced air distribution in residential and commercial HVAC installations.

## Long description

The ALNOR DAOS-200 return damper is a precision-engineered component designed to manage airflow within ventilation and HVAC systems. This device serves as a critical barrier against backflow, ensuring that air moves in the intended direction and maintaining the overall efficiency of the ductwork. Built with robust materials, it provides reliable performance in both residential and commercial settings, contributing to stable air distribution and system longevity.
Advantages
The primary benefit of the ALNOR DAOS-200 is its ability to prevent unwanted air reversal, which protects the integrity of the ventilation system and prevents energy loss. Its durable construction ensures consistent operation over time, reducing the need for frequent maintenance. Furthermore, the design facilitates precise airflow regulation, which is essential for achieving balanced indoor climate control and improving the operational efficiency of connected HVAC equipment.
Suitable for
Residential ventilation systems
Commercial HVAC ductwork
Airflow regulation in supply and return lines
Preventing backdrafts in ventilation ducts
When it may not be suitable
This damper is not intended for use in environments with extreme temperatures or highly corrosive chemical vapors that could degrade the material. It is also not suitable for high-pressure industrial pneumatic conveying systems where specialized heavy-duty valves are required.
Key specifications
Diameter: 200 mm
Function: Backflow prevention and airflow regulation
Application: Ventilation and HVAC ductwork
Material: Durable galvanized steel
How to use
The ALNOR DAOS-200 should be installed directly into the circular ductwork of the ventilation system. Ensure the damper is oriented correctly according to the intended airflow direction indicated on the housing. It is recommended to secure the connection using appropriate duct sealant or mechanical fasteners to ensure an airtight fit. Once installed, verify that the damper blade moves freely and closes completely when airflow ceases.
What to consider before purchase
Verify the internal diameter of your existing ductwork matches the 200 mm specification.
Check the available space in the duct run to ensure proper clearance for the damper housing.
Confirm the compatibility of the damper material with the specific air quality of your environment.
Usage recommendations
Regularly inspect the damper during routine HVAC maintenance to ensure the blade remains free of dust accumulation and debris, which could impede its movement and affect system performance.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.379 kg |

## FAQ

### How much does the ALNOR DAOS-200 Return Damper cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 22 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 01.07.2026 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 ALNOR 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 ALNOR 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/4907254/30576280_large.webp