1. Specifications (1) Frame Width: 61. 8 mm (2) Material: 6063T5/T6, 6060T5/T6 Aluminum (3) Type: Thermal-Break (4) Biggest Size: 2. 5M (W) * 2. 5M (H) (5) Glazing: 5mm+6mm+5mm; Float double glass (6) Surface Finish: Powder Coating, Wood Grain, PVDF Coating (7) Hardware: Germany Made/ Chinese Made (8) Sealant Strip: EPDM 2. Certificate: (1) ISO9001 (2) Certificate for product exemption quality surveillance inspection (3) China Famous Brand (4) China Certification for Quality Mark 3. Quality Control: (1) Material : Using 97% purity aluminum ingot (2) Production Standard: Highest standard in China (3) Equipment Used: UBE Extruder; Elumatec CNC Fabricate Machine 4. Packing: Cardboard Box