Topakustik® Type 28/4 AriaProjects Private Residence, SwitzerlandPrivate Residence, SwitzerlandPrivate Residence, Switzerland Related Products Type 28/4Type 12/4 AriaType 20/20/8 Product Information – Wide groove profile – Rustic appearance – Black MDF core to accentuate the deep grooves – Barely visible perforations – Available in solid spruce or fir with finger jointsRequest SampleFinish OptionsView in SimulatorResourcesFull Installation Manual Important Installation Instructions Data Sheet Warranty Full Brochure LEED Information Edge Options CSI SpecificationsPlanks on WallsPlanks on CeilingsPanels on WallsPanels on CeilingsSound Absorption DataTopakustik 28/4 Aria 2.5-Inch DepthTopakustik 28/4 Aria 8.78-Inch and 3.25-Inch Depth Close Close