Articulated fitting for 16x16 square rails
Articulated fitting for square rails 16x16mm – Quadrum range. Anodised aluminium. Variable-angle connection between two square rails 16x16mm for corner passages or staircases. Adjustable angle locked by screw. Finishes: gloss black or gloss stainless steel. Compatible only with 16x16mm rails from the WoodUp Quadrum range – not compatible with the Ellipsis range. Minimal maintenance: check the tightness of the locking screw once a year. Indoor and outdoor use. Sold individually.
Adjustable Joint for Quadrum 16x16mm Square Rails – Variable Angle
This adjustable joint connects two 16x16mm square rails from the Quadrum range at a variable angle where the balustrade changes direction. Use it with the adjustable horizontal joint for the 80x30mm handrail, the Quadrum 80x30mm adjustable handrail joint. Together, they accommodate the corner across the full height of the balustrade. Each corner requires 5 rail joints (one per horizontal rail) and 1 handrail joint.
Available in gloss black and polished stainless steel finishes, this joint maintains a consistent look across the Quadrum installation. It is compatible only with 16x16mm square rails from the Quadrum range. It cannot be used with the Ellipsis range’s Ø16mm round rails, which require their own adjustable joints Ellipsis Ø16mm adjustable rail joint.
Key specifications
| Specification | Value |
|---|---|
| Material | Anodised aluminium |
| Compatible rail section | 16x16mm – Quadrum range |
| Use | Variable-angle joint between two square rails |
| Finishes | Gloss black / polished stainless steel |
| Range | Quadrum only – not compatible with Ellipsis |
| Quantity per corner | 5 joints per change of direction (1 per rail) |
| Sold | Individually |
Key points
- ✓ Variable angle – adapts to changes of direction without complex cuts
- ✓ 16x16mm Quadrum – an exact fit for WoodUp square rails
- ✓ 5 joints per corner – one for each horizontal rail of the balustrade
- ✓ Combine with the Quadrum 80x30mm adjustable handrail joint – an 80x30mm handrail joint to complete the corner
- ✓ Matching finishes – gloss black or polished stainless steel to match the Quadrum kit
- ✓ Quadrum range only – not compatible with Ellipsis (Ø16mm round rails)
Installation tips
Order 5 joints per corner. Set each joint to the same angle before inserting the rails. Use a protractor or adjustable square to measure the exact angle of your layout. Insert the rail ends into the joints without tightening them, check that all the rails align across both sections of the balustrade, then tighten progressively, post by post. Always combine these with the Quadrum 80x30mm adjustable handrail joint for the same corner at the top of the balustrade.
Care and protection
Clean with soapy water. Check the adjustable mechanism is tight once a year: outdoor temperature changes can slightly loosen the screws that lock the angle. In coastal environments, rinse with fresh water to prevent salt deposits building up in the mechanism.
WoodUp tip
Before you buy: this joint is compatible only with 16x16mm square rails from the QUADRUM range. Do not use it with Ø16mm round rails from the ELLIPSIS range, which have a different section. Allow one joint for each rail at every change of direction. For straight joints between modules, use the straight connector. Clamping screws are included.
Frequently asked questions
Is this joint compatible with Ø16mm round rails from the Ellipsis range?
No. This joint is designed for 16x16mm square rails from the Quadrum range. The Ellipsis range’s Ø16mm round rails have a different profile and require their own adjustable Ellipsis joints Ellipsis Ø16mm adjustable rail joint. The two joints have different internal openings and cannot be interchanged, even though their nominal dimensions may seem similar.
How many joints should I order for a Quadrum balustrade with a 90° corner?
For a 90° corner: 5 adjustable joints for 16x16mm rails Quadrum 16x16mm adjustable rail joint + 1 adjustable horizontal joint for an 80x30mm handrail Quadrum 80x30mm adjustable handrail joint. If your balustrade has several corners, such as an L or U shape, multiply these quantities by the number of corners. Order everything together to ensure the batch and finishes match.
Can this adjustable joint accommodate angles of less than 90°?
The adjustable mechanism accommodates common balustrade angles, approximately 60° to 120°. For very acute or obtuse angles outside this range, contact WoodUp before ordering to check compatibility. Non-standard angles may require specific adaptations.
Do I always need to use this joint with the Quadrum 80x30mm adjustable handrail joint?
Yes, for every corner. When the balustrade changes direction, the angle must be accommodated on all 5 rails and the handrail. If you order the rail joints without the handrail joint, you cannot complete the installation correctly. Always order both accessories for each corner.
Is this Quadrum adjustable rail joint suitable for outdoor use?
Yes, anodised aluminium is suitable for outdoor exposure without treatment. Check the screws that lock the adjustable joint once a year to maintain the set angle, particularly outdoors, where temperature changes can cause slight expansion. In coastal areas, rinsing with fresh water after periods of exposure to sea spray is sufficient.
Complementary products
Quadrum 80x30mm horizontal handrail joint – combine to complete the corner
Quadrum 16x16mm square rail connector – straight joint
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Satisfied or refunded if returned within 14 calendar days (Sundays and public holidays included) following delivery.
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