# Filter housing for aquarium K&N FILTERS Aqua Natura — spherical cartridge, inlet diameter 178–222 mm

**URL:** https://aio.lv/en/product--kn-filters-tn-44587--12014951
**Data updated:** 2026-03-11 20:49 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** K&N FILTERS
**Manufacturer code:** TN-44587
**EAN:** 5904479445872
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 12.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kn-filters-tn-44587--12014951

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Replacement filter housing for aquarium use by K&N FILTERS (Aqua Natura series). Designed for a spherical (kuli) cartridge with an installation/inlet opening diameter of 178–222 mm. Suitable for mounting in aquarium filtration systems that require this specific cartridge size. Provides mechanical support and sealing for the filter media and enables integration into existing setups.

## Long description

Replacement filter housing from K&N FILTERS Aqua Natura designed for a spherical cartridge with an installation/inlet opening diameter of 178–222 mm. The housing provides mechanical support and sealing for a round filter medium, enabling secure integration into aquarium filtration systems that use this cartridge size. Constructed to match the geometry and connection requirements of spherical cartridges, it helps maintain correct flow direction and contact between water and filter media.
Advantages
The housing is tailored for spherical (kuli) cartridges and ensures stable positioning and reliable sealing without introducing additional adapters. Its dimensions accommodate cartridges with inlet diameters from 178 to 222 mm, reducing the risk of leaks and misalignment. The design supports consistent water flow through the filter media and is compatible with systems requiring this specific cartridge form factor.
Suitable for
Replacement of worn or damaged spherical cartridge housings in aquarium filtration systems
Integration into custom filtration setups using Aqua Natura spherical cartridges
Maintenance projects where exact cartridge diameter fit (178–222 mm) is required
Key specifications
Type: housing for spherical cartridge
Compatible cartridge shape: spherical (round/kuli)
Installation/inlet opening diameter: 178–222 mm
Function: mechanical support and sealing for filter media
Intended use: aquarium filtration systems
How to use
Ensure the aquarium filtration system is switched off and any water flow is stopped before replacing the housing. Remove the old housing or cartridge, verify that the new housing's inlet diameter matches the spherical cartridge and the system mounting points, then insert the cartridge and seat it evenly inside the housing. Reassemble connections and seals according to the filtration system's instructions, restore water flow, and check for correct alignment and any leaks during initial operation.
Usage recommendations
Regularly inspect seals and seating to prevent bypass and leakage; replace worn O-rings or gaskets as needed. Use only spherical cartridges that fit within the specified 178–222 mm inlet diameter to maintain filtration efficiency and avoid mechanical stress on the housing.

## FAQ

### How much does the Aquarium filter housing K&N FILTERS Aqua Natura TN-44587 cost, and is it available for purchase?

The price is 14.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 14.07.2026 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 K&N FILTERS 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 K&N FILTERS 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/12014951/67503729_large.webp