Rebated thresholds for finishing doorways where the floor surface is on the same level on both sides of the door. No gap will be left under the door when using a rebated threshold. This prevents cold air from getting in to the apartment. The thickness of the threshold is 22mm and the width 92mm. The birch thresholds are either untreated or surface treated with clear lacquer. The thresholds are ready to be installed. Please note that the size of the product is in module: M7 = 63cm, M8 = 73cm, M9 = 83cm ja M10 = 93cm.