# Water filter cartridge USTM BL 5" Active Carbon 4301973 — inline/replaceable carbon block for taste and chlorine reduction

**URL:** https://aio.lv/en/product--ustm-4301973--11270198
**Data updated:** 2025-12-30 18:39 (EET)
**Category:** Water Filters
**Manufacturer:** USTM
**Manufacturer code:** 4301973
**EAN:** 5907644301973
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.49 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 2.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ustm-4301973--11270198

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 12.06.2026 | free |
| Pickup points | 17.06.2026 | 1.99 EUR |
| Courier delivery to door | 17.06.2026 | 4.99 EUR |

## Summary description

USTM BL 5" Active Carbon 4301973 is a 5-inch replacement water filter cartridge with active carbon media designed to reduce chlorine, unpleasant tastes and odors. Intended for use in household inline housings and filter systems compatible with 5" cartridges, it provides cleaner-tasting water for drinking, cooking and small appliances. Easy to install and replace for routine maintenance.

## Long description

USTM BL 5" Active Carbon 4301973 is a 5-inch replaceable water filter cartridge made of a bonded activated carbon block. It is intended for use in household inline housings and other filter systems compatible with 5" cartridges, providing reduced chlorine, improved taste and odor, and lower levels of some heavy metals. The cartridge features a low dust profile compared with granular activated carbon cartridges and fits standard 5" x 2.5" housings. Service life is up to 8,000 litres or 6 months under typical conditions, with a maximum flow rate of 8 l/min.
Advantages
The bonded activated carbon block construction offers consistent adsorption performance, low particle release and compatibility with standard 5" filter housings. Effectively reduces free chlorine, organic contaminants and contributes to improved water colour, taste and smell. The cartridge is suitable for use in inline systems and as a replacement element in other compatible household filters.
Suitable for
 Inline 5" water filter housings
 Under-sink and countertop filters that accept 5" cartridges
 Pre-treatment before reverse osmosis systems
 Improving drinking and cooking water taste and odor
Key specifications
 Brand: USTM
 Model / MPN: 4301973
 Type: Bonded activated carbon block cartridge
 Size: 5" (height) x 2.5" (diameter)
 Maximum flow rate: 8 l/min
 Service life: up to 8,000 L or 6 months (typical)
 EAN: 5907644301973
How to use
Install the cartridge into a compatible 5" inline or housing following the housing manufacturer's instructions. Flush the new cartridge with water until any initial carbon fines are cleared (follow the housing instructions for recommended flushing volume). Replace the cartridge after 8,000 litres of filtered water or every 6 months, whichever occurs first, or sooner if flow decreases or water quality changes.
Usage recommendations
For optimal performance, use this cartridge as a dedicated taste and chlorine reduction stage or as a pre-filter for reverse osmosis systems. Replace according to local water quality and manufacturer guidance; do not use with microbiologically unsafe water unless adequate disinfection is performed.

## FAQ

### How much does the USTM BL 5" Active Carbon 4301973 filter cartridge cost, and is it available for purchase?

The price is 3.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 60 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 12.06.2026 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 USTM 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 USTM 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/11270198/63115323_large.webp