Maximum Opening Width: 2400 mm Maximum Door Weight: 140 kg Minimum Door Thickness: 25 mm features: Duosync symmetric opening kit Allows synchronous operation of two door leaves with only one hand IMPORTANT: To avoid doors from tilting- Door width should not be less than a third of the door height and the handle height should not be less than a third of the door height Set comprises: 4 Tube buffer with 2 hold-open springs 1 Toothed belt 2 Belt couplers 2 Driver brackets 2 Deflection pulleys Fitting instructions 2 Extra Door Fitting sets and Top Track to be ordered separately - see Related Products Optional side fix door buffer available for large doors or commercial installations