# ALNOR RPCL-125-100 Ventilation Passage with Gasket, DN 100-125 mm

**URL:** https://aio.lv/en/product--alnor-rpcl-125-100--4907166
**Data updated:** 2026-06-10 09:32 (EEST)
**Category:** Ventilation Filters
**Manufacturer:** ALNOR
**Manufacturer code:** RPCL-125-100
**EAN:** 4770364140075
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alnor-rpcl-125-100--4907166

## 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 RPCL-125-100 is a high-quality ventilation passage designed for connecting circular air ducts of different diameters. Featuring a built-in gasket, this adapter ensures an airtight seal, improving the efficiency of HVAC systems. It is suitable for professional ventilation installations, providing a reliable transition between 100 mm and 125 mm duct sizes in residential or commercial buildings.

## Long description

The ALNOR RPCL-125-100 is a professional-grade ventilation passage designed to facilitate the connection between circular air ducts of varying diameters. This adapter serves as a critical component in HVAC systems, allowing for a seamless transition between 100 mm and 125 mm ducting. Engineered with a high-quality integrated gasket, the unit ensures a secure and airtight connection, which is essential for maintaining optimal airflow pressure and system efficiency in both residential and commercial ventilation networks.
Advantages
The primary benefit of the ALNOR RPCL-125-100 is its robust construction and precision engineering, which guarantees a tight fit and reduces the risk of air leakage within the ductwork. By utilizing this adapter, installers can easily modify duct diameters without the need for complex custom fabrication, saving time and labor costs. The inclusion of a factory-fitted gasket simplifies the installation process, as it eliminates the need for additional sealing materials while providing a reliable barrier against pressure loss.
Suitable for
Connecting circular ventilation ducts of different sizes
Residential HVAC system upgrades
Commercial ventilation and air conditioning installations
Adapting ductwork from 100 mm to 125 mm diameters
When it may not be suitable
This ventilation passage is specifically designed for circular duct systems and is not compatible with rectangular or oval ductwork. It should not be used in environments where the air temperature exceeds the material's thermal resistance limits or in systems carrying corrosive or highly abrasive substances.
Key specifications
Connection type: Circular duct adapter
Diameter range: 100 mm to 125 mm
Material: Galvanized steel
Seal: Integrated rubber gasket
How to use
To install the ALNOR RPCL-125-100, ensure that the duct ends are clean and free of debris. Insert the smaller end of the adapter into the 100 mm duct and the larger end into the 125 mm duct. The integrated gasket will provide the necessary friction and seal to hold the connection in place. For permanent installations, it is recommended to secure the joints with self-tapping screws or duct tape to ensure structural integrity under high-pressure conditions.
What to consider before purchase
Verify the exact diameter of your existing ductwork
Check the space availability for the adapter length
Ensure the material is compatible with your specific ventilation environment
Usage recommendations
Regularly inspect the connection points within your ventilation system to ensure that the gasket remains seated correctly and that no air leakage has developed over time due to thermal expansion or vibration.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.17 kg |

## FAQ

### How much does the Ventilation Passage ALNOR RPCL-125-100 cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 57 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/4907166/30576192_large.webp