... , 75 x 35mm, 75 x 45mm, 100 x 45mm 2. Track size: 50 x 40mm, 50 x 35mm Stud and ... track for partition wall 1. Stud size: 50 x 45mm, 50 ... , 75 x 35mm, 75 x 45mm, 100 x 45mm 2. Track size: 50 x 40mm, 50 x 35mm, 75 x 30mm ... , 75 x 35mm, 75 x 45mm, 100 x 45mm 2. Track size: 50 x 40mm, 50 x 35mm, 75 x 30mm ...