Extruded Aluminum Balanced Door
The custom balanced doors at the Exploratorium feature stile and rail type construction of extruded aluminum material with an “Enduring Bronze” painted finish. Several door units include Ellison PowerNow power operation functionality, providing optimal access for all users.
Unlike conventional entry doors, an Ellison aluminum door is constructed from heavy wall extrusions that are made solely for Ellison and specifically designed to work in conjunction with their balanced hardware system. The door horizontal top and bottom rails are attached to the vertical stiles using both welded and bolted connections, yielding an extremely durable and long lasting entrance. Due to their quality craftsmanship, Ellison doors are known for their durability and a long lifespan – suitable for the museum’s 550,000 annual visitors and waterfront location.
While Ellison balanced doors consist of sturdy components, they can still be opened with ease. A balanced door features an inset pivot point at two-thirds the width of the door, creating a balance that distributes the weight so the door requires little force to open. The inset balancing point allows for an easier open force, even against external wind and internal building pressure.
Ellison provides detailed record keeping and full warranties – important when considering the extensive lifespan of an Ellison door. Every door made is imprinted with an individual project number (similar to that of a car’s VIN number) to facilitate easy tracking and maintenance. Furthermore, all Ellison balanced hardware components are machined in-house, which means that replacement components are always readily available. This commitment is invaluable to the Exploratorium at Pier 15, a facility that expects a long lifespan, and future expansion to neighboring Pier 17.