# Duct extension for distribution box DN 125 Zehnder 2577882

**URL:** https://aio.lv/en/product--zehnder-2577882--11833512
**Data updated:** 2026-03-09 14:45 (EET)
**Category:** Ventilation Filters
**Manufacturer:** Zehnder
**Manufacturer code:** 2577882
**EAN:** 4045013388659
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 29.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zehnder-2577882--11833512

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Duct extension designed for a distribution (junction) box with nominal diameter DN 125. Produced by Zehnder (MPN 2577882), this fitting extends ductwork length and connects to DN 125 ventilation boxes and round ducts. Suitable for mechanical ventilation systems where additional reach or spacing is required, used in residential and commercial HVAC installations.

## Long description

The Duct extension for distribution box DN 125 Zehnder is a tubular ventilation fitting designed to extend the length of ductwork and provide a secure connection to round distribution (junction) boxes with a nominal diameter of DN 125. Manufactured by Zehnder, this extension is intended for use in mechanical ventilation systems where increased reach or adjusted spacing between components is required. The component connects to DN 125 round ducts and distribution boxes, maintaining airflow continuity and compatibility with standard DN 125 system parts.
Advantages
This duct extension offers dimensionally accurate connections for DN 125 systems, reducing the need for custom cutting or on-site fabrication. The product is suited to maintain airtight joints when properly installed and assists in simplifying duct routing through walls, ceilings, or between stacked ventilation components. Its design supports consistent internal diameter for minimal airflow disruption and enables modular system adjustments during installation or renovation.
Suitable for
Extending DN 125 duct runs in residential mechanical ventilation systems
Connecting DN 125 round ducts to distribution or junction boxes
Adjusting spacing in commercial HVAC installations with DN 125 components
Retrofitting or renovating ventilation layouts that require additional duct reach
Key specifications
Nominal diameter: DN 125 (compatible with DN 125 round ducts and junction boxes)
Function: tubular extension for ventilation distribution box connections
Application: mechanical ventilation systems in residential and commercial buildings
Material characteristics: manufactured to maintain internal airflow continuity (follow manufacturer material specification sheet)
Connection type: designed for straightforward coupling to round ducts and distribution boxes with matching diameter
How to use
Measure the required extension length and verify compatibility with existing DN 125 distribution boxes and ducts before installation. Align the extension concentrically with the mating distribution box or duct and insert until the joint seats fully. Secure the connection according to local installation practices and applicable sealing methods, such as clamps, seals, or approved duct tape, to ensure airtightness. Confirm that the extended run does not obstruct airflow and that the assembly is supported to prevent stress on adjacent components.
Usage recommendations
Install the extension in compliance with applicable ventilation standards and Zehnder installation guidance. Use appropriate sealing and mechanical supports to preserve airtightness and reduce vibration or noise transmission. Inspect joints after installation and during routine maintenance to ensure continued performance and to detect any loosening or leaks.

## FAQ

### How much does the Duct extension DN 125 Zehnder 2577882 cost, and is it available for purchase?

The price is 35.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 15.07.2026 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 Zehnder 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 Zehnder 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/11833512/67234002_large.webp