
Wholesale Steel Roll up Door for Self Storage Units. Customizable Color Options: Available in Black, White, Red, Blue, Orange, Dark Grey, and other custom colors. High Durability & Security: Anti-theft steel curtain with high strength and strong anti-destructive performance. Long Life Torsion Spring: Torsion spring tested for over 20,000 cycles ensuring reliable operation. Easy Installation: Pre-assembled in factory with predrilled holes; manuals and videos provided. Multiple Opening Methods: Supports Manual, electrical remote, WiFi, and wall switch operations. OEM Service Available: Professional factory offering OEM services for self-storage and industrial projects. Certified Quality: ISO9001 and CE certified with strict quality control procedures. Corrosion Resistance: Water and corrosion resistant design with a lifespan of more than 20 years.