... tolerance: within 2mm 3. High solar transmittance DFG toughened safety conservatory glass Advantages1. Top grade clear float glass with ... 3mm, 4mm, 5mm, 6mm, 8mm, and 10mm Tougheneed safety glass technology1. Clear toughened glass is produced by heating annealed ... which call for high mechanical resistance, personal and property safety, such as glass door, architectural curtain wall, vertical windows ...