A supporting grill for household appliances, in particular cooking appliances, having a frame (2-4; 2-3) with a plurality of upper support elements and a plurality of lower protection elements for resting on a surface of the appliance, wherein the frame (2-4; 2-3) has a plurality of coupling regions having a thickness, to each of which a protection element associated, each coupling region and the corresponding protection element having means for mutual engagement (4a, 4b, 14, 15), wherein each protection element has a body made of elastically deformable material that defines a first lateral portion, a second lateral portion, and an intermediate portion, which extends between the first lateral portion and the second lateral portion, the first lateral portion and the second lateral portion being generally opposite to each other and each having a respective engagement means (14, 15), characterized in that: - the engagement means of the coupling region (4; 2,3) comprise a first through opening and a second through opening, which extend between two opposite sides (1a, 1b) of the coupling region; - the intermediate portion of the body of the protection element bridges the lateral portions (11, 12), the lateral portions (11, 12) and the intermediate portion each having a front and a back; - the engagement means of the lateral portions (11, 12) comprise a first engagement element and a second engagement element, each of which projects from the back of the respective lateral portion (11, 12); and - the first engagement element and the second engagement element are each fitted in a respective through opening (4b, 4a) of the coupling region, with the back of each lateral portion (11, 12) that faces a respective said side (1a, 1b) of the coupling region, and with the back of the intermediate portion that at least partially faces a further side of the coupling region which extends between said two opposite sides (1a, 1b) in such a way that the protection element embraces the frame (2-4; 2-3) externally at the corresponding coupling region. - the engagement means of the coupling region (4; 2,3) comprise a first through opening and a second through opening, which extend between two opposite sides (1a, 1b) of the coupling region; - the intermediate portion of the body of the protection element bridges the lateral portions (11, 12), the lateral portions (11, 12) and the intermediate portion each having a front and a back; - the engagement means of the lateral portions (11, 12) comprise a first engagement element and a second engagement element, each of which projects from the back of the respective lateral portion (11, 12); and - the first engagement element and the second engagement element are each fitted in a respective through opening (4b, 4a) of the coupling region, with the back of each lateral portion (11, 12) that faces a respective said side (1a, 1b) of the coupling region, and with the back of the intermediate portion that at least partially faces a further side of the coupling region which extends between said two opposite sides (1a, 1b) in such a way that the protection element embraces the frame (2-4; 2-3) externally at the corresponding coupling region.