# Water filter element USTM ST 5 inch for softening model 4302000

**URL:** https://aio.lv/en/product--ustm-4302000--11270204
**Data updated:** 2025-12-30 18:39 (EET)
**Category:** Water Filters
**Manufacturer:** USTM
**Manufacturer code:** 4302000
**EAN:** 5907644302000
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.49 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 5.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ustm-4302000--11270204

## 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

Replacement water filter element USTM ST 5 inch (model 4302000) designed for water softening applications. This 5-inch cartridge is intended to reduce hardness by working within compatible softening systems. Suitable for use in household or light-commercial setups where scale reduction and improved appliance longevity are required. Easy to install as a cartridge replacement.

## Long description

Water softening filter element compatible with 5-inch standard in-line housings, designed to reduce water hardness and thus decrease limescale buildup in plumbing, fittings and household appliances. The USTM ST 5 inch (model 4302000) cartridge is suitable for use in throughput water treatment systems and can be installed as a replacement element in many manufacturers' filters.
Advantages
The cartridge uses an acid ion-exchange layer inside to lower hardness during water flow, providing up to 1000 liters or 6 months of service life under recommended conditions. Its standard 5" × 2.5" dimensions allow cross-compatibility with other 5-inch filter housings and the maximum effective flow rate is 4 l/min for sustained softening performance.
Suitable for
Point-of-use under-sink softening filters (e.g., FS2/FS3 style)
5-inch standard in-line filter housings
Household and light-commercial applications for scale control
Key specifications
Brand: USTM
Model / MPN: 4302000
EAN: 5907644302000
Type: Water softening cartridge (ion-exchange layer)
Dimensions: 5 inches height × 2.5 inches diameter
Service life: up to 1000 L or up to 6 months
Maximum effective flow rate: 4 L/min
How to use
Install the cartridge into a compatible 5-inch in-line filter housing according to the housing manufacturer's instructions, typically placing it before the specific water outlet to be softened. Ensure system is depressurized before replacing the element. After installation, flush the system according to recommended startup procedures until the flow runs clear.
Usage recommendations
Replace the cartridge after treating approximately 1000 liters or after 6 months of service, whichever comes first. Maintain within the specified maximum flow of 4 L/min for optimal softening. Verify compatibility with your filter housing model before purchase.

## FAQ

### How much does the USTM ST 5 inch water filter element 4302000 cost, and is it available for purchase?

The price is 6.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 48 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

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