# Round Multi-Stage Duct Reducer AWENTA Fi 100/110/120/125/150 Rko 0004-00010-66759

**URL:** https://aio.lv/en/product--awenta-0004-00010-66759--11947203
**Data updated:** 2026-03-11 13:43 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** AWENTA
**Manufacturer code:** 0004-00010-66759
**EAN:** 5905033299573
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--awenta-0004-00010-66759--11947203

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Awenta round multi-stage duct reducer designed for connecting circular ventilation ducts with diameters 100, 110, 120, 125 and 150 mm. The reducer provides stepped transitions between sizes for flexible installation in HVAC systems, enabling connection of different pipe sections and adaptation of airflow paths in residential and commercial ventilation applications.

## Long description

Awenta round multi-stage duct reducer Fi 100/110/120/125/150 Rko 0004-00010-66759 is a stepped circular adapter designed to join ventilation ducts of different diameters. The component enables a single transition element to accommodate duct sizes 100, 110, 120, 125 and 150 mm, simplifying modifications and retrofits in HVAC installations. Constructed for compatibility with standard round ductwork, it supports routing and reconfiguration of airflow paths in residential and light-commercial ventilation systems.
Advantages
The multi-stage design removes the need for multiple separate reducers by integrating several stepped diameters into one compact unit. Its circular profile ensures secure, concentric connections that maintain duct alignment and reduce turbulence at transitions. The reducer is suitable for tight installation spaces and for projects where several possible connection diameters may be required during planning or maintenance.
Suitable for
 Connecting and adapting round ventilation ducts of 100–150 mm diameters
 Retrofitting existing HVAC runs where outlet or inlet sizes vary
 Temporary or permanent transitions during system testing and balancing
 Residential and small commercial ventilation systems
Key specifications
 Supported diameters: 100 mm, 110 mm, 120 mm, 125 mm, 150 mm
 Shape: circular / round stepped reducer
 Function: multi-stage stepped transition between duct sizes
 Application: air distribution and ventilation ductwork
 Compatibility: standard round ventilation duct connections
How to use
Select the stepped outlet matching the target duct diameter and slide the corresponding section into the mating duct. Ensure ends are fully engaged for a concentric fit and secure the connection with appropriate clamps, pop rivets, or duct tape according to site practice and material compatibility. Check for alignment and sealing at each transition to minimise air leakage and pressure loss. If necessary, use sealing compound or gasket material on joints to meet system performance requirements.
Usage recommendations
Use the reducer in applications where a single flexible solution for multiple diameters reduces inventory and installation time. Verify that the selected transition does not create excessive pressure drop for the system; when reducing diameter significantly, assess fan capacity and airflow to maintain required ventilation rates. Regularly inspect joints and seals during commissioning and maintenance to ensure continued air-tight performance.

## FAQ

### How much does the Duct Reducer AWENTA Fi 100/110/120/125/150 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 — 36 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 23.07.2026 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 AWENTA 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 AWENTA 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/11947203/67390707_large.webp