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.
Articulated Fitting for 16x16mm Square Rails Quadrum Range – Variable Angle
This articulated fitting connects two 16x16mm Quadrum range square rails at a variable angle, for configurations where the balustrade changes direction. It is used in combination with the 80x30mm articulated horizontal handrail fitting – together, they handle the complete angle of the balustrade across its full height. Each balustrade angle requires 5 rail fittings (one per horizontal rail) and 1 handrail fitting.
Available in gloss black and gloss stainless steel finishes, this fitting maintains the visual consistency of the Quadrum installation. It is exclusively compatible with 16x16mm square rails in the Quadrum range – not interchangeable with Ø16mm round rails in the Ellipsis range, which require their own articulated fittings Ø16mm Ellipsis articulated rail fitting.
Main characteristics
| Characteristic | Value |
|---|---|
| Material | Anodised aluminium |
| Compatible rail section | 16x16mm – Quadrum range |
| Use | Variable-angle fitting between two square rails |
| Finishes | Gloss black / Gloss stainless steel |
| Range | Quadrum only – not compatible with Ellipsis |
| Quantity per angle | 5 fittings per change of direction (1 per rail) |
| Sold | Sold individually |
Key points
- ✓ Variable angle – adapts to all changes of direction without complex cutting
- ✓ 16x16mm Quadrum – exact section of WoodUp square rails
- ✓ 5 fittings per angle – one per horizontal rail of the balustrade
- ✓ To be combined with Quadrum articulated handrail fitting 80x30mm – 80x30mm handrail fitting to handle the complete angle
- ✓ Consistent finishes – gloss black or gloss stainless steel identical to the Quadrum kit
- ✓ Exclusive to Quadrum range – not compatible with Ellipsis (Ø16mm round rails)
Installation advice
Order this fitting in batches of 5 units per angle. Adjust the angle of each fitting identically before insertion – use a protractor or adjustable square to measure the exact angle of your configuration. Insert the rail ends into the fittings without tightening, check the alignment of all rails across both sections of the balustrade, then tighten progressively post by post. Always combine with the handrail fitting Quadrum articulated handrail fitting 80x30mm for the same angle at the top of the balustrade.
Maintenance and protection
Clean with soapy water. Check the tightness of the articulated mechanism annually – thermal variations outdoors can slightly loosen the angle locking screws. Rinse with fresh water in marine environments to prevent salt deposits in the mechanism.
WoodUp tip
What to know before buying: this fitting is exclusively compatible with 16x16mm square rails in the QUADRUM range — do not use with Ø16mm round rails in the ELLIPSIS range, which have a different section. Plan for one fitting per angle of change of direction. For straight-line joints between modules, use the straight connector (ID 805). The clamping screws are included.
Frequently asked questions
Is this fitting compatible with Ø16mm round rails in the Ellipsis range?
No. This fitting is designed for 16x16mm square rails in the Quadrum range. The Ø16mm round rails in the Ellipsis range have a different profile and require the specific Ellipsis articulated fittings Ø16mm Ellipsis articulated rail fitting. The two fittings have different internal housings – they are not interchangeable even if the nominal dimensions appear similar.
How many fittings should be ordered for a Quadrum balustrade at a 90° angle?
For a 90° angle: 5 articulated fittings for 16x16mm rails 16x16mm Quadrum articulated rail fitting + 1 articulated horizontal handrail fitting 80x30mm Quadrum articulated handrail fitting 80x30mm. If your balustrade has multiple angles (L-shaped, U-shaped), multiply these quantities by the number of angles. Order in one go to guarantee batch and finish consistency.
Can this articulated fitting handle angles of less than 90°?
The articulated mechanism covers common balustrade angles (approximately 60° to 120°). For very acute or very obtuse angles outside this range, contact WoodUp before ordering to validate compatibility. Non-standard angles may require specific adaptation solutions.
Should this fitting always be combined with the handrail fitting Quadrum articulated handrail fitting 80x30mm?
Yes, in all cases involving an angle. A change of direction in the balustrade requires managing the angle across all 5 rails and the handrail simultaneously. Ordering only the rail fittings without the handrail fitting makes it impossible to complete the installation correctly. Always order both accessories together for each angle.
Is this Quadrum articulated rail fitting suitable for outdoor use?
Yes, anodised aluminium is suitable for outdoor exposure without treatment. Check the tightness of the joint locking screws once a year to maintain the set angle, particularly outdoors where temperature variations can cause slight expansion. In coastal environments, rinsing with fresh water after periods of exposure to salt spray is sufficient.
Complementary products
Quadrum horizontal handrail fitting 80x30mm – to be combined for the complete angle
16x16mm Quadrum square rail connector – straight joint
No questions yet.
Dispatch within 10 days when the product is in stock *.
* Except bespoke products
Dispatched within 6-8 weeks for personalised and made-to-measure products.
Payment in 1 or 3 instalments at no extra cost. Bank transfer, cheque or PayPal
Satisfied or refunded if returned within 14 calendar days (Sundays and public holidays included) following delivery.
8 other products in the same category:
No questions yet.





