# FISCHER hollow wall dowel DuoHM 4 x 55 mm PH/TX, pack of 4

**URL:** https://aio.lv/en/product--fischer-4048962523928--11518248
**Data updated:** 2026-04-16 13:25 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** FISCHER
**Manufacturer code:** 4048962523928
**EAN:** 4048962523928
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fischer-4048962523928--11518248

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

FISCHER DuoHM hollow wall dowel, size 4 x 55 mm, PH/TX drive, pack of 4. Designed for secure fixing in hollow or lightweight building materials, this dowel expands and anchors behind the substrate to hold fixtures such as shelves, frames or light fittings. Supplied in a small 4-piece pack for repairs and small installations.

## Long description

The FISCHER hollow wall dowel DuoHM 4 x 55 mm PH/TX, pack of 4 is a compact fixing solution designed for secure mounting in hollow and lightweight construction materials. The dowel is engineered to expand and form a reliable anchor behind the substrate, providing support for light to medium loads such as shelves, picture frames, cable channels and small fittings. The PH/TX drive allows compatible screws to be used for straightforward installation and improved torque transfer.
Advantages
The DuoHM hollow wall dowel offers a combination of easy installation and secure anchoring. Its expanding body ensures contact with the rear side of the wall cavity, creating a stable fixing point without the need for through-bolting. The 4 x 55 mm size is suitable for many common hollow-wall applications, and the small pack of four is convenient for repairs or limited installations. Made to Fischer’s product standards, the dowel is formed to provide consistent performance in appropriate substrates.
Suitable for
Mounting lightweight shelving and picture frames on hollow walls
Fixing small fittings such as coat hooks, curtain rails and cable clips
Installing light electrical fittings and junction boxes in hollow substrates
Repair jobs and small DIY installations where a small quantity is sufficient
When it may not be suitable
This dowel is intended for hollow or lightweight building materials and is not designed for use in solid concrete or solid brick where alternative anchors are recommended. It is aimed at light to medium loads; heavy structural loads, large shelving systems or load-bearing applications require specialist anchors and load calculations. The size 4 x 55 mm may be insufficient where thicker fixtures or deeper substrates are present.
Key specifications
Type: Hollow wall expanding dowel
Dimensions: 4 x 55 mm (diameter x length)
Drive: PH/TX compatible
Pack quantity: 4 pieces
Material: engineered polymer suitable for cavity anchoring
How to use
Drill an appropriately sized hole through the wall material to the recommended depth for a 4 x 55 mm dowel. Insert the dowel into the cavity until the collar sits flush with the surface. Place the fixture over the dowel and drive a compatible screw with a PH or TX bit to expand the body of the dowel behind the substrate. Tighten until the fixture is secure without over-torquing. For best results, follow recommended drill bit sizes and screw types for hollow wall fixings.
What to consider before purchase
Confirm the substrate type is a hollow or lightweight wall suitable for expanding cavity anchors
Check the required load capacity for your fixture and whether a 4 x 55 mm dowel is sufficient
Ensure you have compatible screws with a PH or TX head and the correct length
Verify drill bit size and access to the backside of the cavity if required
Usage recommendations
Use the dowel in appropriate hollow materials and pair with recommended screw sizes to achieve reliable anchoring. For heavier loads or safety-critical installations, consult product technical data or choose a suitable heavy-duty anchor system.

## FAQ

### How much does the FISCHER DuoHM hollow wall dowel 4 x 55 mm cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 15.07.2026 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. 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 FISCHER 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 FISCHER 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/11518248/66534642_large.webp