Visona is a gypsum-based acoustical ceiling. Especially designed for installation in a double T-grid to ensure maximum flexibility. No cross runners required. Ceiling tiles rest in the grid lengthwise and can be pushed back and forth in the grid. Erik Ipsen, architect and Head of R&D at Knauf Danoline explains: “Visona system has a Drag ‘n’ Drop feature that allows you to easily adapt the ceiling and lighting design to suit the changing environment such as office refurbishment.” Excellent acoustical comfort with a perforation percentage of 21.3% and an alpha value of 0.80.