• Stainless Steel Registers And Grilles
• 304 (Standard) Or 316 (Optional) Stainless – Satin Finish
• 22 Ga. Frame, 24 Ga. Blades
• Maximum Single Section Is 72″ X 72″. Sizes Over 30″ In Blade Direction Have Interior Mullions
• Other Available Accessories Include Plaster Frame And Square To Round Transition.