METALCITI Boston Aluminium Z-Bar French Cleat Hanging Rail 900 mm (Pre-Drilled / 9 Holes – 100 kg)

The Boston 900 mm (90 cm / 36″) aluminium French cleat Z-Bar hanging rail is a heavy-duty mounting profile designed for securing medium to large picture frames, heavy mirrors, wall shelves, cabinets, and panels. Extruded from high-grade aluminium alloy, this pre-drilled 900 mm rail features 9 factory-punched 6 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 an invisible, 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

Heavy-Duty 100 kg Weight Rating — High-grade extruded aluminium construction supports up to 100 kg per rail when anchored firmly into timber wall studs, solid masonry, or suitable drywall fixings.

Factory Pre-Drilled (9 Holes) — Features 9 pre-punched 6 mm fixing holes spaced along the 900 mm length, eliminating the need to drill through tough metal on site.

Slim 6.3 mm Depth Projection — Low-profile interlocking design keeps heavy frames, mirrors, and cabinets exceptionally close to the wall for a sleek, floating presentation.

Technical Specifications & Downloads

Profile Series: Boston Z-Bar Series
Rail Length: 900 mm (90 cm / 36″ — easily trimmed using a standard hacksaw)
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: 100 kg (Subject to wall substrate and anchor rating)
Profile Hole Type: Pre-Drilled (9 × 6 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 900 mm rails together or combine a 900 mm rail with 50 mm Boston clips or longer continuous wall rails.

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

1. Mark your fixing positions through the 9 factory 6 mm holes using a spirit level along your wall or timber studs.
2. Secure the wall rail with the open Z-channel facing UP and OUT.
3. Secure the matching rail or clips to the rear top edge of your item with the open Z-channel facing DOWN and IN.
4. 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 100 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 900 mm (Pre-Drilled with 9 × 6 mm Holes – 100 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.