# ALNOR DAOS-160 Return Damper for Ventilation Systems

**URL:** https://aio.lv/en/product--alnor-daos-160--4907253
**Data updated:** 2026-06-10 09:32 (EEST)
**Category:** Ventilation Filters
**Manufacturer:** ALNOR
**Manufacturer code:** DAOS-160
**EAN:** 4772013178057
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-08-12 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alnor-daos-160--4907253

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

The ALNOR DAOS-160 is a high-quality return damper designed for efficient airflow control in ventilation systems. This component prevents backflow and ensures optimal air distribution within ductwork. Engineered for durability and precise operation, the DAOS-160 is suitable for professional HVAC installations, providing reliable performance in maintaining system pressure and preventing unwanted air circulation in residential or commercial buildings.

## Long description

The ALNOR DAOS-160 return damper is a specialized component engineered for precise airflow management within ventilation systems. Designed to prevent backflow, this damper ensures that air moves in the intended direction, maintaining the integrity and efficiency of your ductwork. Its robust construction supports consistent performance in both residential and commercial HVAC setups, making it an essential element for balanced air distribution and system pressure control.
Advantages
This return damper offers exceptional reliability by effectively blocking reverse airflow, which helps in maintaining the desired climate conditions and preventing energy loss. The unit is built with high-quality materials that ensure long-term durability even under continuous operation. Its design facilitates seamless integration into standard duct systems, allowing for straightforward installation and minimal maintenance requirements over its service life.
Suitable for
Residential ventilation and air conditioning systems
Commercial HVAC ductwork installations
Preventing backflow in air supply or exhaust lines
Maintaining pressure balance in complex ventilation networks
When it may not be suitable
The DAOS-160 is not intended for use in environments with highly corrosive gases or extreme temperatures that exceed the manufacturer's specified operating range. It is also not suitable for applications requiring motorized or automated airflow control, as this is a passive mechanical component.
Key specifications
Diameter: 160 mm
Function: Backflow prevention
Application: Ventilation ductwork
Material: Durable galvanized steel
How to use
The damper should be installed directly into the circular ventilation ductwork at the designated point where backflow prevention is required. Ensure the unit is oriented correctly according to the airflow direction indicated on the housing. Secure the damper firmly using appropriate duct connectors or screws to ensure an airtight seal and prevent vibration during system operation.
What to consider before purchase
Verify the diameter of your existing ductwork to ensure compatibility with the 160 mm size.
Check the airflow requirements of your specific ventilation system.
Ensure there is sufficient space in the duct run for the damper housing.
Usage recommendations
Regularly inspect the damper during routine HVAC maintenance to ensure the flap moves freely and is free from dust or debris accumulation that could impede its operation.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.293 kg |

## FAQ

### How much does the ALNOR DAOS-160 Return Damper cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 88 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 Friday 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/4907253/30576279_large.webp