A kit for the realisation of doors or windows, comprising: a magnetic induction closure device comprising a magnetic induction catch and at least one magnetic induction armature , wherein said magnetic induction catch is insertable in a first housing hole and comprises a first connection plate adapted to be fixed to an edge surface of a panel and wherein said magnetic induction armature is insertable in a second housing hole and comprises a first connection interface adapted to fix said magnetic induction armature to a frame ; and a mechanical catch lock comprising a lock body which houses at least a mechanical catch and a mechanical armature adapted to receive said mechanical catch, wherein said lock body is insertable in the first housing hole and comprises a second connection plate adapted to be fixed to said edge surface of said panel and wherein said mechanical armature is insertable in the second housing hole and comprises a second connection interface adapted to fix said mechanical armature to said frame , wherein said magnetic induction catch and said lock body have a shape and dimensions such as to allow their insertion in the first housing hole , wherein said magnetic induction armature and said mechanical armature (1 0b) have a shape and dimensions such as to allow their insertion in the second housing hole , wherein said first connection plate and said second connection plate have a shape and dimensions such as to allow the fixing thereof at the first housing hole , said first connection plate and said second connection plate being substantially identical, and wherein said first connection interface and said second connection interface have a shape and dimensions such as to allow the fixing thereof at the second housing hole , said first connection interface and said second connection interface being substantially identical. a magnetic induction closure device comprising a magnetic induction catch and at least one magnetic induction armature , wherein said magnetic induction catch is insertable in a first housing hole and comprises a first connection plate adapted to be fixed to an edge surface of a panel and wherein said magnetic induction armature is insertable in a second housing hole and comprises a first connection interface adapted to fix said magnetic induction armature to a frame ; and a mechanical catch lock comprising a lock body which houses at least a mechanical catch and a mechanical armature adapted to receive said mechanical catch, wherein said lock body is insertable in the first housing hole and comprises a second connection plate adapted to be fixed to said edge surface of said panel and wherein said mechanical armature is insertable in the second housing hole and comprises a second connection interface adapted to fix said mechanical armature to said frame , wherein said magnetic induction catch and said lock body have a shape and dimensions such as to allow their insertion in the first housing hole , wherein said magnetic induction armature and said mechanical armature (1 0b) have a shape and dimensions such as to allow their insertion in the second housing hole , wherein said first connection plate and said second connection plate have a shape and dimensions such as to allow the fixing thereof at the first housing hole , said first connection plate and said second connection plate being substantially identical, and wherein said first connection interface and said second connection interface have a shape and dimensions such as to allow the fixing thereof at the second housing hole , said first connection interface and said second connection interface being substantially identical. <EOS>