FEATURE Door Construction Galvanized steel with polyester textile fiber Door Material PVC for curtain & galvanized steel frame Opening speed 30-50 Closing speed 25-40 Maximum Size W 30 x H30 Pressure/Wind Resistance Up to 30 PSF COLORS Redï¼?Yellowï¼?Blue Top Dog main productsï¼?high speed hard commercial door, sectional garage door and high speed fabric garage door. Top Dogs commercial door can apply to industrial area, storage, restaurants, retail centers, and automotive service centers. The newest generation of Top Dog commercial doors can offer the ultimate in strength, security and safety. -