# ALNOR NSL-250 Internal Connector with Gasket for Ventilation Ducts

**URL:** https://aio.lv/en/product--alnor-nsl-250--4907238
**Data updated:** 2026-06-10 09:32 (EEST)
**Category:** Ventilation Filters
**Manufacturer:** ALNOR
**Manufacturer code:** NSL-250
**EAN:** 4772013122470
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 4.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--alnor-nsl-250--4907238

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

The ALNOR NSL-250 is an internal connector designed for secure and airtight joining of circular ventilation ducts. Equipped with a high-quality gasket, it ensures optimal system tightness and reduces air leakage. This durable component is essential for professional HVAC installations, providing a reliable connection that maintains airflow efficiency in residential and commercial ventilation systems.

## Long description

The ALNOR NSL-250 internal connector is a professional-grade component engineered for the secure and airtight joining of circular ventilation ducts. Designed to fit seamlessly within the ducting, this connector features a high-quality integrated gasket that significantly enhances system integrity by minimizing air leakage. It is a fundamental element for maintaining the efficiency and performance of HVAC installations in both residential and commercial environments.
Advantages
The primary advantage of the ALNOR NSL-250 is its ability to provide a robust and reliable connection that maintains the structural continuity of ventilation lines. The inclusion of a factory-fitted gasket ensures an airtight seal, which is critical for preventing energy loss and maintaining optimal pressure levels throughout the ductwork. Its internal design allows for a clean, streamlined exterior appearance of the ventilation system, while the durable construction ensures long-term resistance to mechanical stress and environmental factors.
Suitable for
Connecting circular ventilation ducts in HVAC systems
Residential ventilation and air distribution networks
Commercial building climate control installations
Systems requiring high airtightness standards
When it may not be suitable
This connector is specifically designed for circular ventilation ducts and is not compatible with rectangular ducting systems. It may also not be suitable for applications involving high-temperature industrial exhaust or corrosive chemical vapors that exceed the material specifications of the gasket and connector.
Key specifications
Diameter: 250 mm
Material: Galvanized steel
Integrated gasket: Yes
Connection type: Internal
How to use
To install the ALNOR NSL-250, insert the connector into the ends of the two circular ventilation ducts you wish to join. Ensure that the connector is pushed in until the center stop is reached, providing an even distribution within both duct sections. The integrated gasket will compress against the inner walls of the ducts, creating a secure and airtight seal. No additional sealing tape is typically required, though standard installation practices should be followed to ensure the ducts are properly supported and aligned.
What to consider before purchase
Verify the exact internal diameter of your existing ventilation ducts
Ensure the connector material is compatible with your specific ventilation environment
Check if the installation space allows for internal connection methods
Usage recommendations
For optimal performance, ensure that the duct ends are free from debris or sharp edges before insertion. Regularly inspect the ventilation system for any signs of pressure loss or mechanical vibration to ensure the integrity of the connections over time.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.0338 kg |

## FAQ

### How much does the ALNOR NSL-250 Internal Connector with Gasket cost, and is it available for purchase?

The price is 5.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 176 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 30.06.2026 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/4907238/30576264_large.webp