Sianna - Gate
Architect Aluminium
Available as hinged and sliding gate
Sianna
Gate - Architect Aluminium
Available as hinged and sliding gate
The Sianna gate offers understated modernity with clean lines that suit all types of homes. Its large panels are perfect for large entrances while maintaining the elegance of the Archy range. It will secure your home and your privacy outdoors.
Level of privacy : Solid
Top shape : Straight
Maximum leaves dimensions : 4750 x 2000 mm
Maximum sliding dimensions : 5500 x 2250 mm
Assembly method : Welded Aluminum
*Due to manufacturing technical constraints, maximum widths and heights may be revised.
High and low hinges : lacquered in the same colour as the portail
Posts : aluminium posts to match the portail as option
House number : laser cut or alunox
Mailbox : lacquered in the same colour as the portail
All our aluminum gates are available in over 300 colours at no extra cost
View colours
Access control optional : doorbell, keypad, video intercom...
Connected motorisation : available
Connected parcel box : available as option
All our gate aluminium models are guaranteed for 30 years on manufacturing and powder coating. Easy to maintain, just use clean water, a non-abrasive sponge and a soft absorbent cloth to preserve the beauty of your gate.
They have a bespoke Kostum
Customer testimonials
Great product, very well finished
Danielle
October 27, 2025
Superb, exceptional quality.
Anaïs
June 25, 2025
Very good service, beautiful product
Elodie
September 6, 2024
Very good product with very careful installation. Very happy to have chosen this product.
Alicia
May 27, 2024
High-quality gate
solenn
May 9, 2025
Great gate and beautiful colour
Frederic
October 1, 2024
Perfect. Thank you again
Vincent
November 14, 2024
Installation of a Kostum gate, beautiful product, choice and Customisation possible, which is great.
Jean-Marc
September 4, 2024
Very good product
Mathieu
March 13, 2025
Installation of a guardrail, top notch, nothing to say I recommend
Michael
May 24, 2025
Quality product! I recommend Kostum products.
A
July 3, 2024
Very high-quality product and finish, and perfect installation. I recommend this product and the professionalism of this company.
jarnet
February 18, 2025
High-quality products, modern design, wide range of colours. The BATIMAN fitters recommend this brand!
Flo
July 12, 2024
Superb product. However, at this point, there is a slight misalignment between the two gate leaves. I cannot find the technical instructions to remedy this minor issue.
robert
December 31, 2023
Very nice product
Alain
December 19, 2024
Good quality, perfect installation! I recommend it.
Louis
October 3, 2025
Very happy, impeccable quality product, very satisfied.
David
October 1, 2024
Very good product, I recommend it!
Matheo
June 26, 2025
I recommend this brand, you can trust them 100%
Julien
September 11, 2025
Very good purchase
Leni
September 6, 2025
As a partner of Rafflin joinery for gates, guardrails and fencing, Kostum gives us complete satisfaction in terms of product quality, after-sales service and product developments that meet our needs in the field. I recommend them. Be sure to choose a competent company to install it.
xavier
February 25, 2023
Good product and good installer
Lucas
July 24, 2024
Very satisfied with the gate and fence.
bertrand
June 2, 2025
Very high-quality product.
chris
June 13, 2024
Superb gate with a great installer, I recommend it 100%. Very satisfied
lydia
October 9, 2025
50 years of French know-how and custom work
600 qualified installers for a flawless installation
20,000 custom projects completed every year
30-year warranty on manufacturing and coating
Complete your project
Garden harmony
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