Before installation, the construction shall be carried out according to the plan, and the varieties, standards, opening direction and support pieces of doors and windows shall be checked. Aluminum spring doors from Xiamen KDSBuilding are designed for smooth, automatic closing and long-term durability. Made with high-strength aluminum profiles and reliable spring mechanisms, they are ideal for commercial and high-traffic areas. The door offers excellent corrosion resistance, easy maintenance, and stable performance for shops, offices, and public buildings. series: 50 series non thermal break aluminum opening style:  casement  Color: black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 Visible Transmittance :  0.41 Nail Fin Design  :  NO Door Screen :  no Grille design : no

The national standard of floor spring door is that the first-class product is opened ≥ 300000 times (actually the minimum standard of qualified products), the high-quality product is opened ≥ 500000 times, and the European standard is the minimum 500000 times. series: 50 series non thermal break aluminum opening style:  casement  Color: black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 Nail Fin Design  :  NO Door Screen :  no Grille design : no

The selection of ground spring mainly selects different types of ground spring according to the weight of glass door. series: 50 series non thermal break aluminum opening style:  casement  Color: black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 Nail Fin Design  :  NO Door Screen :  no Grille design : no

This door springs are equiped with tempered glass, and hydraulic gymnastics spring floor door closer. series: 50 series non thermal break aluminum opening style:  casement  Color: black Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 Nail Fin Design  :  NO Door Screen :  no Grille design : no