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It looks like you're in USA.
You will find more suitable content on the following page:
www.nora.com/united-states/en/market-segments/healthcare/area/stairwell
Suitable products
Stairtread norament® 926 grano
Granular design rich in contrast with a hammerblow surface, footfall sound absorption improvement of 12 dB.
Stairtread norament® 926 satura
Tone-in-tone granular design with a hammerblow surface, footfall sound absorption improvement of 12 dB.