"The Barceló Raval hotel in Barcelona, Spain, features 2200 Basotect ceiling baffles made from BASF's flexible melamine resin foam. Basotect’s low weight, sound absorption properties and ability to be manufactured in different shapes made it an obvious material choice for the ceiling design of the hotel lobby. An open-cell, fine-foam structure that is inherently flame-retardant and acoustically absorptive, Basotect reduces noise reverberations and improves speech intelligibility throughout the entire space."
sources: notcot / FURFIN