Supply & Fixing of Window frames (Chowkhats) including mullions consisting frame fabricated from sheet roll formed out of 0.58mm thick galvanized sheet (base steel as per IS:513) with zinc of 120gm/sqm steel sheet pre coated (as per approved colour) with polyster paint of 12-16 micrones thickness under coat of EPOXY primer & back coated with ALKYD backer of 5-7 micrones total thickness of coating 0.58mm of approved shade, fixed in position by means of PVC & metal hold fastner with PVC cap complete in all respects as per drawing, design, specifications & entire stasfication of Engineer-in-Charge- Windows Outer frame of size 72mm x55mm and central mullion 72 mm x 50mm with Double rebate.