A lead-through element for leading pipes through a floor structure , the lead-through element comprising - a first part mountable to a floor of a first space above the floor structure , the first part comprising first openings ; and - a second part mountable to a ceiling of a second space located below the floor structure , the second part comprising second openings , the second openings being concentric with the first openings when the lead-through element is mounted in place, - the lead-through element further comprises intermediate casings , each configured to extend from a first opening to a second opening inside a circular hole configured to extend from the first space to the second space through the floor structure , between the first opening and the second opening when the lead-through element is mounted in place; the intermediate casings configured to form lead-through channels between the first part and the second part ; through which lead-through channels each, at least one pipe is configured to be led from the first space to the second space ; characterized in that the first part comprises a first plate comprising a upper side , an underside and a first back edge , the first back edge extending upwards at a right angle to form a first flange , the first flange comprising a first face side and a first backside ; and that the first part is mountable onto the floor of the first space by engaging the underside with the floor ; and that the first part comprises a face defined by a first edge , a second edge , a third edge , and a fourth edge ; and corresponding side walls extending downwards from respective edges to the first plate ; and that the face , the edges (100a-d) and the side walls (101a-d) are configured to define a stand for securing a plumbing arrangement element in a correct position; and that each of the first openings comprise a first collar protruding upwards from the face and extending in the opposite direction downwards from the face . - a first part mountable to a floor of a first space above the floor structure , the first part comprising first openings ; and - a second part mountable to a ceiling of a second space located below the floor structure , the second part comprising second openings , the second openings being concentric with the first openings when the lead-through element is mounted in place, - the lead-through element further comprises intermediate casings , each configured to extend from a first opening to a second opening inside a circular hole configured to extend from the first space to the second space through the floor structure , between the first opening and the second opening when the lead-through element is mounted in place; the intermediate casings configured to form lead-through channels between the first part and the second part ; through which lead-through channels each, at least one pipe is configured to be led from the first space to the second space ; characterized in that the first part comprises a first plate comprising a upper side , an underside and a first back edge , the first back edge extending upwards at a right angle to form a first flange , the first flange comprising a first face side and a first backside ; and that the first part is mountable onto the floor of the first space by engaging the underside with the floor ; and that the first part comprises a face defined by a first edge , a second edge , a third edge , and a fourth edge ; and corresponding side walls extending downwards from respective edges to the first plate ; and that the face , the edges (100a-d) and the side walls (101a-d) are configured to define a stand for securing a plumbing arrangement element in a correct position; and that each of the first openings comprise a first collar protruding upwards from the face and extending in the opposite direction downwards from the face . <EOS>