A movable door leaf sealing strip assembly including bottom mechanism for attachment to bottom portion of the door leaf, wherein the bottom mechanism comprises at least a movable sealing strip being movable between an upper position and a lower position, and at least one guiding element for vertical guiding of the movable sealing strip movement, wherein the assembly further includes technical means for temporary lifting of the movable sealing strip up from the lower position prior to opening of the door leaf, the assembly further including upper mechanism controllable by a door handle, said door handle is linked with a latch tab, wherein the technical means for lifting the movable sealing strip up from the lower position before opening of the door leaf include a lifting element linking the upper mechanism and/or the door handle with the bottom mechanism to transfer an impulse from the door handle to the movable sealing strip, wherein the upper mechanism includes pulley controllable by the door handle movement, said pulley is provided with groove on at least a portion of its periphery, in which at least first cord is located at least temporary, wherein bottom end of a first cord is attached to the movable sealing strip so it forms the lifting element, and the assembly further includes a technical means for arresting of the movable sealing strip in the upper position and a releasing element linked with said technical means for arresting of the movable sealing strip for releasing of the technical means for arresting of the movable sealing strip and for spontaneous lowering of the movable sealing strip from the upper position, characterized in that the pulley is provided with a concave structure and the technical means for arresting of the movable sealing strip includes a convex structure with a spring arranged for spontaneous falling to the pulley concave structure just rotated by the door handle, wherein the assembly further includes technical means for mechanical illustration of the door handle position in the area between, but not including, the latch tab release position and the retention position of the technical means for arresting of the movable sealing strip, the mechanical illustration referring to signalling to the user being haptic for the user. and at least one guiding element for vertical guiding of the movable sealing strip movement, wherein the assembly further includes technical means for temporary lifting of the movable sealing strip up from the lower position prior to opening of the door leaf, the assembly further including upper mechanism controllable by a door handle, said door handle is linked with a latch tab, wherein the technical means for lifting the movable sealing strip up from the lower position before opening of the door leaf include a lifting element linking the upper mechanism and/or the door handle with the bottom mechanism to transfer an impulse from the door handle to the movable sealing strip, wherein the upper mechanism includes pulley controllable by the door handle movement, said pulley is provided with groove on at least a portion of its periphery, in which at least first cord is located at least temporary, wherein bottom end of a first cord is attached to the movable sealing strip so it forms the lifting element, and the assembly further includes a technical means for arresting of the movable sealing strip in the upper position and a releasing element linked with said technical means for arresting of the movable sealing strip for releasing of the technical means for arresting of the movable sealing strip and for spontaneous lowering of the movable sealing strip from the upper position, characterized in that the pulley is provided with a concave structure and the technical means for arresting of the movable sealing strip includes a convex structure with a spring arranged for spontaneous falling to the pulley concave structure just rotated by the door handle, wherein the assembly further includes technical means for mechanical illustration of the door handle position in the area between, but not including, the latch tab release position and the retention position of the technical means for arresting of the movable sealing strip, the mechanical illustration referring to signalling to the user being haptic for the user.