... 3mm 4. hole:round,squar,hex,slot Type stainless steel perforated sheet/plate/Hole patternsround,rectangle,square,oval, hex,slot ,etcStandardJIS, AISI ... food processing, and petrochemical industries GaugeHolesCentersOpen Area %30.026".045"20%261/32"1/16"22%26.033".055"STRAIGHT29%243 ... 16"5/16"33%22-161/4"5/16"58%20-14.111/4"3/8"40%103/8"1/2"51 ... %18,16,113/8"9/16"40%20,16,14,111/2"11/16"48%113/4"1"51 ...