197x197mm Gratings: Grating without frame 190×190, but with grating it is 197x197mm
160x160mm Gratings: Grating without frame 151×151, but with grating it is 160x160mm
197x197mm Gratings: Grating without frame 190×190, but with grating it is 197x197mm
160x160mm Gratings: Grating without frame 151×151, but with grating it is 160x160mm