Steelworks. 24-in x 36-in Aluminum Decorative Sheet Metal. Model # 11262. Find My Store. for pricing and availability. 32. M-D. 24-in x 3-ft Aluminum Decorative Sheet Metal. Model # Aluminum Perforated Plate. Aluminum Perforated plate is processed in a wide range of round, square, slotted, decorative, and even odd-shaped perforations from numerous metal sheets. The mostmon percentage of open areas is between 30% and 50% although more extreme open areas are available depending on the perforation.Type: Stainless Steel Sheets Standard: ASTM, AISI, GB, JIS, DIN Grade: 300 Series Certification: ISO, AISI, ASTM, GB, DIN Shape: Square Technique: Hot Rolled/Cold RolledPerforated Metal is also an excellent product for filtration (sound, liquid, light, etc.) applications. McNICHOLS stocks Perforated Meuding Aluminum, Carbon Steel, Galvanized Steel, Stainless Steel and even Plastic! ROUND. PERFORATED.