Exterior full vision high speed door, Model 889 ADV-Xtreme, is ideal for applications where aesthetics and visibility are a priority. Constructed with a fully assembled curtain, this door is easy to install and maintain. Model 889 ADV-Xtreme is a full vision high speed metal door that features a patented helical-designed steel head plate that helps prevent metal curtain contact and provides smooth operation. A patented curtain monitoring device ensures the door has a redundant system to monitor the position of the door. The high speed metal door design provides visibility, durability and security.