The Boston 50 mm (2″) aluminium French cleat Z-Bar hanging rail is a compact, heavy-duty mounting bracket engineered for securing picture frames, mirrors, wall shelves, and panels. Extruded from high-grade aluminium alloy, this pre-drilled 50 mm rail features 2 factory-punched 5.2 mm fixing holes for rapid, hassle-free setup. Its precision Z-shaped interlocking profile holds objects securely with a minimal 6.3 mm wall stand-off, delivering a hidden, perfectly level, and rock-solid mounting solution for domestic and commercial projects. Rails are sold individually (not in pairs) to allow custom modular configurations.
Key System Benefits
Compact 25 kg Weight Rating — High-grade extruded aluminium construction supports up to 25 kg per rail when anchored firmly into timber wall studs, solid masonry, or suitable drywall fixings.
Factory Pre-Drilled (2 Holes) — Features 2 pre-punched 5.2 mm fixing holes spaced across the 50 mm width, eliminating the need to drill through tough metal on site.
Slim 6.3 mm Depth Projection — Low-profile interlocking design keeps frames and mirrors exceptionally close to the wall for a sleek, floating presentation.
Technical Specifications & Downloads
Profile Series: Boston Z-Bar Series
Rail Length: 50 mm (2″ — compact cleat hanger rail)
Height × Depth: 34.9 mm (H) × 6.3 mm (D)
Lift-Off Clearance (Interlock): Requires 9.5 mm vertical clearance to engage/disengage
Maximum Weight Capacity: 25 kg (Subject to wall substrate and anchor rating)
Profile Hole Type: Pre-Drilled (2 × 5.2 mm fixing holes)
Material & Finish: High-grade extruded aluminium
Installation Manual: Download Z-Bar Hanger Instructions (PDF)
Quantity: 1 single rail
Flexible Mounting & System Compatibility
The Boston Z-Bar system provides exceptional versatility across various wall surfaces, including drywall, plaster, and timber studs. Because the interlocking cleat profile is uniform across the Boston series, you can freely pair 50 mm rails together or combine a 50 mm frame rail with a longer continuous Boston wall rail.
Installation Configurations:
Rail-on-Rail: Pair two 900 mm rails (one on the wall, one on the item) for heavy wall mirrors, headboards, or timber cabinets.
Rail-on-Rail: Mount multiple 50 mm Boston rails to the back of a frame and interlock them onto a continuous 900 mm wall rail.
Split Anchor Fit: Mount a longer Boston wall rail (e.g. 1200 mm) on the wall and pair it with a 900 mm rail segment across the back of your frame.
Installation & Structural Load Safety
- Mark your fixing positions through the 2 factory 5.2 mm holes using a spirit level.
- Secure the wall rail with the open Z-channel facing UP and OUT.
- Secure the matching rail to the rear top edge of your item with the open Z-channel facing DOWN and IN.
- Lift your item above the wall rail and lower it into place until the cleats engage. Ensure you allow at least 9.5 mm vertical clearance above the rail to slide the interlocking channels together.
Load Capacity Safety Note: The stated 25 kg weight capacity applies to the structural limit of the aluminium rail itself. Fixings and wall substrates (screws, plugs, plasterboard) typically fail before the rail. Always ensure your fixings and wall structure are rated to support the total load.
What’s Included in the Box
1 × Boston Aluminium Z-Bar French Cleat Hanging Rail 50 mm (Pre-Drilled with 2 × 5.2 mm Holes – 25 kg Rating)
Note: Rails are sold individually (not in pairs) to allow custom modular configurations. Fixing screws and wall plugs are sold separately.
Illustration only
Only the items listed above are included. Below images to show how the system can be used.


