Square handrails for glass

About square slot handrails for glass

A square slot handrail is a 40x40 mm section with a groove on its underside that seats directly on the top edge of a glass panel.

Unlike the round Ø42.4 mm handrail, the square one gives straight lines and sharp arrises – more minimal, and a better match for modern façade and interior geometry.

A gasket holds the glass in the slot, so one profile covers glass thicknesses from 8 to 21.52 mm.

Strofix supplies it in satin, in AISI 304 or AISI 316, in lengths from 2500 to 5000 mm.

The choice depends on glass thickness, run length, steel grade and whether you want a square or round line.

How to choose a square slot handrail

1. Square or round

The square 40x40 mm profile is visually quieter and matches square posts and profiles.

The round Ø42.4 mm handrail is easier to grip with the whole hand. If the handrail is a real support rail rather than just a glass capping, consider the round one.

2. Glass thickness (8–21.52 mm)

There is one slot, but several gaskets – the gasket adapts the slot to your specific glass.

Order the gasket together with the handrail and to your own glass thickness, or the handrail will rattle on the glass.

3. Length (2500–5000 mm)

A longer handrail means fewer joints in the visible line.

For longer runs use the handrail connector for 40x40 mm profile – it joins two handrails in line without a step.

4. Steel grade: AISI 304 or AISI 316

AISI 304 suits interiors and normal outdoor exposure.

AISI 316 resists chlorides better and suits coastal sites, pools and balconies where de-icing salt is used.

5. What else the assembly needs

A complete run needs a gasket matched to the glass, end caps for 40x40 mm profile and – where the line turns – a horizontal or vertical handrail elbow.

For a wall connection there is a separate axial handrail fastening for 40x40 mm profile.