400 Series

Standard Features:

1. Steel Slat Curtain
   All slats are manufactured from the highest quality galvanized steel with a baked enamel prime finish. Available in 18 ga., 20 ga., 22 ga., or 24 ga. flat or curved slat.
2. Guides
   Minimum 3/16″ structural steel angle. (roll formed guides on 24 gauge doors up to 14.0″x14.0″.)
3. Bottom Bar
   Two 2″ x 2″ x 1/8″ thick structural steel angles form a rugged bottom bar assembly. A rubber bottom astragal helps to conform to floor irregularities and helps guard against weather, dirt, insects and rodents.
4. Pipe Barrel
   Continuous 6″ minimum diameter pipe to support curtain with no more than .03″ of deflection per foot of width.
5. Counterbalance
   Helical torsion springs are oil tempered and grease packed. Springs are designed for 20,000 cycles minimum and are accurately calculated for every door using Porvene’s uniquely designed “Door Dynamometer”.
6. Door Stops
   Stops are located on the inside and outside of the guides for added safety.
7. Hood
   24 Gauge galvanized steel with a baked enamel prime finish hood that forms an enclosure at the top of the door.
8. Chain Hoist
   Heavy duty #50 roller chain and sprockets combined with a smooth hand-chain provides for safe and efficient operation. Removal of chain hoist makes door Electric Operation ready without further modification or cost.
9. Sealed Ball Bearing
   Self-aligning and allow free rotation of barrel.