Introduction to the B‑Tech BT8390‑VESA400F/B
B‑Tech BT8390‑VESA400F/Bare System X flat interface arms supplied as a pair and engineered to provide a low‑profile, robust mounting solution for small to medium flat screens in commercial and public environments. Designed specifically for B‑Tech System X horizontal rails, these interface arms support landscape or portrait orientations, offer VESA and non‑VESA compatibility up to 400 mm, and carry a substantial 70 kg maximum load. With a typical installed depth of just 48 mm, levelling adjustments and security screws included, these arms are tailored for shallow, tidy installations such as digital signage, menu boards and retail displays.
Key features at a glance
- Maximum load:70 kg capacity, suitable for 39"–75" screens.
- VESA support:Up to 400 mm (vertical) plus non‑VESA fixings.
- Shallow installed depth:48 mm for close wall mounting and cable access.
- Orientation:Supports landscape or portrait mounting.
- Installation:Hook‑on to System X horizontal rails with lateral adjustment.
- Security & levelling:Post‑installation levelling screws and safety screws included.
- Certification:TÜV certified for safety and compliance.
Detailed specifications and benefits
The BT8390‑VESA400F/B is packaged and sold as a pair, making it the natural choice when two interface points are required for a single screen or matching two screens in a consistent installation. The 70 kg maximum load rating places these arms in the heavy‑duty category for their form factor, enabling them to carry a broad range of commercial displays between roughly 39" and 75" (99–190 cm). The arms accept VESA patterns up to 400 mm vertically and can also be adapted for non‑VESA screens, increasing compatibility across display brands and models.
With a typical installed depth of 48 mm, these interface arms are intended for situations where screens must sit close to the mounting rail or wall surface — for example, menu boards, in‑aisle retail displays or public information panels. The shallow profile keeps the overall installation neat while providing enough space to route power and video cabling behind the screen. This balance of closeness and accessibility is particularly useful in tight public‑facing environments where appearance matters.
Post‑installation levelling screws allow fine vertical adjustment after the screen is hung, ensuring an even, professional presentation without the need to unmount the display. Lateral adjustment along the System X rail makes aligning multiple screens simpler during multi‑screen builds. Safety screws are included to deter unauthorised removal of screens — an important consideration in public or high‑traffic venues. TÜV certification adds an extra layer of assurance for installers and specifiers concerned about compliance and safety.
These arms are designed for commercial and contractor use, but they remain accessible to experienced DIY installers who are familiar with display mounting systems. Hook‑on installation speeds up the fitting process and reduces on‑site labour time, while the availability of technical drawings and installation guides from B‑Tech helps ensure correct specification and execution.
Use cases and scenarios where the product excels
- Digital signage single‑row installations:Perfect for mounting individual screens in retail aisles, entrance foyers or wayfinding locations where a low profile and tidy cable routing are required.
- Menu boards and hospitality:Restaurants and cafés using digital menu systems benefit from the shallow depth and secure fitting, keeping displays close to the wall and easy to service.
- Multi‑screen video walls or arrays:For single‑row or tiled multi‑screen setups along a System X rail, the lateral adjustment and levelling screws allow fine alignment across several displays.
- Public information and transport hubs:Stations, airports and public buildings where secure, compliant mounting is essential; safety screws and TÜV certification are particularly relevant here.
- Corporate and education environments:Boardrooms, lecture theatres and collaborative spaces that use medium to large screens and require a professional, low‑profile installation.
Comparisons with similar products
B‑Tech’s broader System X range includes several interface arm variants: some offer tilting or cantilever features, others are designed for heavier loads or deeper offsets. The BT8390‑VESA400F/B is specifically positioned as a flat, shallow solution — where minimal protrusion and a clean aesthetic are priorities. If you need tilt or extended reach, other System X arms with articulation may suit better, but they generally increase installed depth and visual complexity.
Generic low‑profile wall mounts can offer a similarly slim install depth, but they often lack the lateral adjustment and rail‑based flexibility of System X. The BT8390‑VESA400F/B benefits from System X’s rail‑mounted workflow, which speeds multi‑display alignment and reconfiguration. Additionally, the TÜV certification and included safety screws make the BT8390‑VESA400F/B a stronger choice for regulated or public spaces.
Freestanding stands and trolleys provide mobility that the BT8390‑VESA400F/B cannot. However, for fixed installations where security, longevity and a polished appearance are required, the flat interface arms on a System X rail deliver a superior, permanent solution and generally better cable management.
Representative customer feedback
While individual reviews will vary with each installation, installers and end users typically highlight the following points based on field feedback across similar B‑Tech products:
- "Quick to fit and easy to level" — contractors often praise the hook‑on method and levelling screws for reducing site time.
- "Clean, professional look" — retail and hospitality customers appreciate the shallow depth and tidy cable access.
- "Robust and reassuringly secure" — public‑space installers value the safety screws and TÜV certification for compliance reasons.
- "Good value for specification work" — project managers note that the pair format and compatibility with System X rails make procurement straightforward for multi‑screen projects.
For specific, named testimonials or case studies, consult reseller sites or B‑Tech project references where available.
Pricing and value
The BT8390‑VESA400F/B is positioned as a practical, professional mounting interface. With a suggested retail price of approximately 49.99 (check local currency and distributor pricing) and commercial packaging as a pair, it offers an economical route to robust, compliant digital signage installations — especially when compared with bespoke mounting solutions or fully articulated mounts that carry higher cost and complexity.
Conclusion: why choose the BT8390‑VESA400F/B?
If your project calls for a low‑profile, secure and adaptable interface for medium‑to‑large screens mounted on B‑Tech System X rails, the BT8390‑VESA400F/B is a compelling choice. It combines a high load capacity (70 kg), broad VESA compatibility (up to 400 mm), shallow installed depth (48 mm) and installer‑friendly features such as hook‑on installation, levelling screws and security fixings. TÜV certification and the availability of technical documentation further support its use in professional and public installations.
In short, these flat interface arms deliver the practical balance of strength, finish and functionality that specifiers, contractors and retail fit‑out teams look for — all at a competitive price point. Always consult B‑Tech installation guides and confirm substrate, rail selection and fixings are appropriate for the combined weight and use case, and engage a qualified installer for commercial or public projects when required.
