# EUROPLAST KSD25-125 Duct Transition, Rectangular 220 x 55 mm to Round DN125

**URL:** https://aio.lv/en/product--europlast-ksd25-125--4907146
**Data updated:** 2026-06-10 09:32 (EEST)
**Category:** Ventilation Filters
**Manufacturer:** EUROPLAST
**Manufacturer code:** KSD25-125
**EAN:** 4750492218662
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--europlast-ksd25-125--4907146

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 08.07.2026 | 1.89 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The EUROPLAST KSD25-125 is a high-quality ventilation duct transition designed to connect rectangular 220 x 55 mm ducts to round DN125 air channels. Made from durable plastic, this adapter ensures an airtight and efficient airflow in residential or commercial ventilation systems. It is an essential component for complex ductwork configurations, providing a reliable solution for seamless transitions between different duct shapes.

## Long description

The EUROPLAST KSD25-125 is a high-quality ventilation duct transition engineered to facilitate the connection between rectangular 220 x 55 mm ducts and round DN125 air channels. This adapter is constructed from durable, high-grade plastic, ensuring long-term reliability and structural integrity within various ventilation setups. Its precise design allows for a secure fit, minimizing air leakage and maintaining optimal pressure levels throughout the ductwork system.
Advantages
The primary benefit of this duct transition is its ability to bridge the gap between different duct geometries without the need for complex custom fabrication. The smooth interior surface of the adapter promotes efficient airflow, reducing turbulence and noise levels within the ventilation system. Its lightweight yet robust plastic construction makes it easy to handle and install, while its resistance to corrosion ensures it remains effective even in humid environments. This component is an essential element for achieving a seamless and professional finish in any air distribution project.
Suitable for
Connecting flat rectangular ventilation ducts to round flexible or rigid pipes
Residential kitchen hood exhaust systems
Bathroom and utility room ventilation setups
Commercial air exchange systems requiring shape transitions
When it may not be suitable
This adapter is not intended for use in high-temperature industrial exhaust systems where temperatures exceed the heat resistance limits of standard plastic materials. It is also not suitable for applications involving aggressive chemical vapors or heavy particulate matter that could cause abrasion or degradation of the plastic structure.
Key specifications
Rectangular connection size: 220 x 55 mm
Round connection diameter: 125 mm
Material: Durable plastic
Compatibility: Standard ventilation ducting
How to use
To install the EUROPLAST KSD25-125, first ensure that both the rectangular and round duct ends are clean and free of debris. Slide the rectangular end of the adapter over or into the rectangular duct, and connect the round end to the DN125 pipe. Use appropriate ventilation tape or mechanical fasteners to secure the joints and ensure an airtight seal. It is recommended to support the weight of the connected ducts independently to prevent stress on the adapter itself.
What to consider before purchase
Verify the exact dimensions of your existing ductwork to ensure compatibility
Check if additional sealing materials like duct tape or silicone are required for your specific installation
Ensure there is sufficient space in the installation area to accommodate the transition piece
Usage recommendations
For optimal performance, ensure all connections are properly sealed with airtight tape to prevent pressure loss. Regularly inspect the ductwork for dust accumulation to maintain consistent airflow efficiency.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.22 kg |

## FAQ

### How much does the EUROPLAST KSD25-125 Duct Transition 220x55mm to DN125 cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 129 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 EUROPLAST 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 EUROPLAST 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/4907146/30576172_large.webp