Topakustik® - Grooved SolutionsA clean, linear approach to acoustics.Profiles are created with 2, 3, or 4mm grooves with different spacing options.Topperfo Micro ProductsTopperfo ProductsNarrow SpacingType 6/2 6mm Flat Area2mm GrooveType 8/3 8mm Flat Area3mm GrooveType 9/2 9mm Flat Area2mm GrooveMedium SpacingType 12/4 12mm Flat Area4mm GrooveType 13/3 13mm Flat Area3mm GrooveType 14/2 14mm Flat Area2mm GrooveType 19/2 19mm Flat Area2mm GrooveWide SpacingType 28/4 28mm Flat Area4mm GrooveType 29/3 29mm Flat Area3mm GrooveType 30/2 30mm Flat Area2mm GrooveSpecial TypesType 9/2HR 9mm Flat Area2mm GrooveType 12/4 Aria 12mm Flat Area4mm GrooveType 28/4 Aria 28mm Flat Area4mm GrooveType R Random Groove Size