Slotted Mesh Perforated Metal Slotted perforated metal is produced in ferrous materials in plates, stainless steel or galvanized steel. Oblong Slotted Perforated Metal: 3.175 x 25.400 mm oblong slot 6.350 mm centers Side Staggered 43% open 22 gauge steel Length of oblong slots run length of sheet. 1/4" Slotted Perforated Metal: 6.350 x 38.100 mm slot Every third bridge 4.763 mm wide Other bridges 2.381 mm 67% open area of sheets 16, 18, 20 gauge steel Length of slots runs width of perforated sheet. Mesh sizes and plate thickness typical available: DE 1.2X5 D/C 7 X 7.5mm DE 2X14 D/C 14X21mm DE 2.5x20 D/C14X25mm To: DE 5X20X D/C 16X44mm DE 8X20 D/C 25X46mm Custom orders with gauges and sizes available.