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 Model 678 


security grilles 

When Overhead Door Corporation's side-folding full closure grilles are ideal for applications that require a secure barrier against theft and debris, such as retail applications in malls and airport concourses. The full closure side folding grille line includes four panel materials: perforated steel, clear polycarbonate, tempered glass and aluminum. All four models are available in both standard-body and wide-body versions.

Model 678 features tempered glass for a crystal-clear view and high durability. Visibility: 100% of 4-3/4" (121mm) viewable area.

Curtain frame

Truss-like aluminum top and bottom plates; 1/8" (3 mm) thick

Panel width

6 5/16" (160 mm) standard body
11 1/4" (298 mm) wide body


Aluminum clear anodized

Trolley assembly

1 1/8" (29 mm); vertical adjustment 1" (25 mm) up/down without curtain removal


Top-mounted, heavy-duty aluminum sections

Track height

1 5/8" (41 mm)

Track width

1 3/8" (35 mm)

Standard track curves

90°: Standard body: 10" (254 mm) and 14" (356 mm) radius; Wide body: 22" (559 mm) radius
120°, 135° and 150°: Standard body: 10" (254 mm) radius


14" (356 mm) standard body; 22" (559 mm) wide body; custom upon request

Post types

Lead post

Hook lock and wall channel; bi-part; top and bottom shoot bolts

Intermediate post

Bottom shoot bolt

Trailing end post

Traveling; fixed; hook lock and wall jamb; top and bottom shoot bolts; carrier

Locking mechanisms

Lead post

Concealed cylinder-operated hook lock accessible from interior and exterior

Intermediate post

Concealed cylinder-operated shoot bolt accessible from one side only

Trailing end post

Attached 10' max. (3048 mm) protection plate self-locking into a steel V-Stop


24 month OEM limited

  • Custom radii and curves
  • Thumb-turn guards
  • Vertical adjustment upward or downward