Flexible Duct Design: External static pressure can be up to 196Pa (models 71 to 160) or 280Pa (models 200 to 560), The maximum length for air supply is about 14m at a height of 6.5m, With a 420mm (models 71 to 160) thick body, the minimum distance required above the ceiling is 450mm

Double-skin Drainage Pan: Double-skin drainage pan provides double protection for ceilings (models 71 to 160 and models 400 to 560)