ГОСТ 30245-03; 8645-68; 8639-82; 20х20; 25х25; 28x25; 30x15; 30x30; 40x20; 40x25; 40x40; 50x50; 50x25; 50x30; 60x30; 60x40; 60x60; 80x60; 80x80; 100x100; 120x120; 120x80; 140x140; 140x100; 140x120; 140x80; 150x150; 150x100; 160x160; 160x120; 180x180; 180x140; 200x200; 200x100; 250x250; 250x120