Which innovative façade system was prominently featured in the 2021 RIBA Stirling Prize-winning Stirling Prize project, Kingston University London's Town House?

The prestigious Royal Institute of British Architects (RIBA) Stirling Prize recognizes excellence in architectural design and innovation. Behind many winning buildings are groundbreaking architectural products that push the boundaries of what's possible in construction. This trivia question focuses on a revolutionary product that played a key role in a recent Stirling Prize-winning project. Test your knowledge of cutting-edge architectural product developments that are shaping the industry!

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Ductal UHPC precast concrete colonnade system by LafargeHolcim
Pilkington Planar structural glass curtain wall system
Kingspan Kooltherm K15 rainscreen cladding panels
Schüco FWS 60 aluminum-framed double-skin façade system