Stainless Steel Gratings and Fabrications Stainless Steel gratings can be used in a variety of applications in both interior and exterior environments. Stainless Revolving Door Grating – SG1 Stainless Revolving Door Grating – SG2 Stainless Entrance Grating – SG3 Stainless Stair Riser Grating – SG4 Stainless Vent Grating – SG5 Stainless Vent Grating – SG6 Stainless Tree Grating – SG7