# Bettermann HE 74-L Cavity Wall Junction Box with Membrane Entries and Extra Wiring Space for Wall Depth min 75mm

**URL:** https://aio.lv/en/product--bettermann-he-74-l--12606003
**Data updated:** 2026-07-31 04:14 (EEST)
**Category:** Other goods
**Manufacturer:** Bettermann
**Manufacturer code:** HE 74-L
**EAN:** 4012197276676
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.99 €
**Prices and availability valid until:** 2026-11-19 23:59
**Price without VAT (21%):** 9.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bettermann-he-74-l--12606003

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 04.11.2026 | free |
| Pickup points | 09.11.2026 | 1.99 EUR |
| Courier delivery to door | 09.11.2026 | 4.99 EUR |

## Summary description

Bettermann HE 74-L cavity wall junction box featuring flexible membrane entries and extra wiring space. Designed for secure electrical installations in hollow walls with a minimum depth of 75 mm and a plate thickness ranging from 5 to 35 mm. Ideal for professional construction and wiring projects, ensuring reliable cable management and safe connections.

## Long description

The Bettermann HE 74-L Cavity Wall Junction Box with Membrane Entries and Extra Wiring Space is a reliable electrical accessory designed for secure cable management in hollow walls. Engineered for professional construction and renovation projects, this junction box provides ample room for electrical connections while ensuring safe and efficient installation. It is specifically built for wall depths of a minimum of 75 mm and supports plate thicknesses from 5 to 35 mm, making it a versatile choice for modern building standards.
Advantages
This cavity wall junction box offers flexible membrane entries that allow for quick and tool-free cable insertion while maintaining a secure seal around the wires. The integrated extra wiring space significantly simplifies the connection process, reducing strain on cables and providing enough room for complex wiring configurations. Constructed to meet professional electrical installation requirements, it ensures long-term safety and durability behind cavity walls.
Suitable for
Electrical installations in hollow walls and drywalls
Professional construction and residential renovation projects
Secure cable management and wire junction routing
Wall structures with a minimum depth of 75 mm and plate thickness between 5 and 35 mm
When it may not be suitable
This junction box is not designed for solid masonry or concrete walls where cavity installation methods cannot be applied. Additionally, it may not be suitable for wall depths of less than 75 mm or plate thicknesses outside the 5 to 35 mm range.
Key specifications
Cavity wall junction box design
Flexible membrane entries for cable insertion
Extra wiring space for internal connections
Minimum wall depth requirement of 75 mm
Compatible with plate thicknesses from 5 to 35 mm
How to use
Prepare the installation opening in the hollow wall according to the dimensions required by the junction box. Insert the cables through the flexible membrane entries into the interior of the box, ensuring the membranes form a snug fit around the cables. Position the junction box securely within the wall cavity, making sure the plate thickness falls within the specified range of 5 to 35 mm. Complete the electrical connections inside the extra wiring space using appropriate terminals and secure the cover plate.
What to consider before purchase
Verify that the hollow wall has a minimum depth of 75 mm
Check that the wall plate thickness is between 5 and 35 mm
Ensure the box dimensions and wiring space match your project requirements
Usage recommendations
Always disconnect the power supply before performing any electrical installation work, and ensure that installation complies with local electrical safety regulations and guidelines.

## FAQ

### How much does the Bettermann HE 74-L Cavity Wall Box cost, and is it available for purchase?

The price is 10.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 04.11.2026 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 Bettermann 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 Bettermann 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/12606003/70213308_large.webp