Bend – Adjustable Bend Vertical – Slotted Square – 25 x 21mm

The 25 x 21mm Square Slotted Adjustable Bend Vertical enables a square slotted top rail to follow the pitch of a staircase cleanly and precisely. The vertical hinge adjusts up and down on an upright plane, accommodating the exact rake angle of the staircase before locking in position as the tube ends are inserted — no site cutting, no welding, and no specialist fabrication required.

Square profile fittings at staircase transitions are particularly satisfying when done well — the flat faces of the fitting align with the flat faces of the tube, creating a crisp, angular transition that reinforces the geometric character of a square-tube design. This fitting makes that result achievable for a confident DIYer working alone on a weekend installation.

The glass slot terminates at the fitting on both sides of the transition point.

Specifications

• Type: Adjustable Bend — Vertical
• Adjustment Axis: Vertical (pivots up and down on an upright plane)
• Adjustment Range: 0° to approximately 180°
• Profile: Square Slotted
• Tube Dimensions: 25 x 21mm
• Fitting Method: Hinge mechanism — no bolts or adhesive required
• Units Per Pack: 1 fitting (fits both tube ends at transition)
• Compatible With: 25 x 21mm square slotted tube
• Finish Options: Brushed Satin | Mirror Polish
• Grade Options: 304 Stainless Steel | 316 Marine Grade Stainless Steel
• Material: Stainless Steel
• Category: Components & Fittings – Slotted Fittings

Which Grade Should I Choose?

Grade 304 is strong and reliable, suited to internal applications and external use in non-coastal, non-corrosive environments — ideal for inland areas such as Johannesburg, Pretoria, and most non-coastal suburbs.

Grade 316 (Marine Grade) offers superior corrosion resistance and is the essential choice for coastal properties, poolside installations, and any environment exposed to salt air, moisture, or chemicals. If you are in Cape Town, the Winelands, Durban, or any coastal area, Grade 316 is strongly recommended.

Installation Note

Always match your fitting grade and finish to your slotted tubing for a consistent, professional result. When fitting against glass panels, use neutral-cure silicone or clear rubber gaskets — avoid acetoxy (acid-cure) silicone as it can stain stainless steel.

Not Sure What You Need?

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