Curtain

• 26-gauge galvanized, Grade E hard steel
• 5⁄8” ribbed corrugation
• Many latch options available
• All latches accept double locks and 7⁄16” shackles
• Rain lip note: For proper exterior door installation, a 1 ½” deep rain lip must be formed in the concrete slab extending a minimum of 3 ½” from the interior face of the jamb
• NOTE: The 650 Series are wind rated up to 8’8” wide and approximately 90 MPH. For test results on doors up to 8’8” wide, please contact DBCI Sales at 800.542.0501.

Bottom Bar

• 6063 – T6 aluminum extrusion
• 1 ½” x 1 ½” galvanized angles
• Replaceable bulb astragal

Axle-Drum Assembly

• 1 5⁄16” O.D. steel axle, 14-gauge
• Utilizes 9 ½”, 18-gauge drums
• Oil tempered e-coated torsion springs, available in two springs upon request from 7’ to 10’ wide
• Fully accessible springs for inspection and maintenance

Guide System

• 18-gauge galvanized steel
• Pre-punched holes for anchors, slide latch, bracket attachment and head stop attachment
• Polyethylene guide strips provide easy, quiet operation
  

Hardware

• 12-gauge head stops have slotted mounting holes for proper attachment
• 14-gauge galvanized steel handles
• 12-gauge tension bracket made for additional strength
• Shielded radial bearings for smooth operation
• Worm gear tensioning design allows for smooth adjustment
• 12-gauge bearing bracket on right side
  

Options

• Insulation 651 Series
• Top and side draft stop