ACP-Acoustic Ceiling Prod A50-50 Stainless Tile 3'' x 6'' Horizontal by ACP-Acoustic Ceiling Prod. Save 12 Off!. $24.30. 1 EACH. Stainless Aspect Peel and Stick Metal Tiles are 3'' x 6'' and have a horizontal grain. Tiles apply to any substrate such as drywall, plaster, or old tiles. Multiple layout and pattern options are available. 8 tiles per box covers 1 sq. ft. 5 year limited warranty.