Air Outlet Net For Tm Type 6Fra6068 As Per Clw Drg. No. 2Twd.096.078 Alt-3 With The Following Two Conditions: 1) The Square Punch To Be 12Mm X 12 Mm As Against 11 Mm X 11Mm Square.2) The Thickness Of The Sheet To Be 2.5Mm As Against 1.6Mm.