Sealed Ball Bearings are self-aligning and allow lasting free rotation.
Drum Assembly. The counter balancing mechanism is housed in this unique, roll-up assembly.
Maximum Security. All slats are manufactured from the highest quality galvanized steel with a baked enamel finish, to form an effective secure curtain. Two slide bolt locks standard on all doors. (Available in 24 or 22 gauge.)
Weather Seal. A blade astragal made from E.P.D.M., a highly resilient and flexible rubber compound, runs the full length of the bottom angle to seal the threshold of the opening. This forms a barrier against weather, dirt, insects and rodents.
Guides. Two pieces roll formed steel guides standard on all standard doors. Windlocks provided on larger sizes.
Chain Operation. A minimum of a 4 to 1 reduction standard on all doors. Smooth hand-chain provides safe and comfortable operation eliminating the sharp edges common to lock link hand chain.
Slat Configuration. All doors available in curved or flat slats. Galvanized according to ASTM A653-G60 and finished with baked epoxy primer and baked polyester topcoat.
The Porvene Secret. State of the Art technology has allowed Porvene Doors to create a Door Dynamometer which accurately measures the torque characteristics of roll-up doors.