AV-47
AV 47 is a non-thermally insulated sliding system with two- or three-rails, which can integrate between two and six vents. AV 47 is able to include fixed side or top elements.
Air tightness : A3 (EN 1026, EN 12207)
Water tightness : E2 (EN 1027, EN 12208)
Wind load resistance : V4 (EN 12211, EN 12210)
Wind load : Class V4