Overhead Door is your ideal provider of the perfect security grille for any application you may have. For malls, retail stores, and airport concourses our security grille model 677 is a popular and durable solution. Designed as a side-folding full-closure grille, this unit is available with four separate panel materials in both standard and wide-body configurations.
Security Grilles 677 Meet Fire-Retardant Requirements
The panel materials offer you the choice of tempered glass, clear polycarbonate, and perforated steel which allow visibility and ventilation along with full security against trash and theft. The non-breakable polycarbonate also meets most fire-retardant specifications with a viewable area of 4-3/4” (121mm) per panel. If desired, the solid aluminum panels block visibility.
The model 677 offers door options of custom radii and curves, thumb-turn guards, and vertical adjustments upward and downward. Additionally, the post types include:
- Lead post: Hook lock using a wall channel with 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
Depending on the post, the available locking mechanisms include: Lead – lock with concealed cylinder-operated hook lock (accessible from interior and exterior); Intermediate – lock with bottom shoot bolt; Trailing end post – traveling, fixed, lock and wall jamb, top and bottom shoot bolts, carrier.
In addition to the model 677, you’ll find many affordable and durable options for security grilles at Overhead Door Company of The Meadowlands & NYC.
Other Side-Folding Security Grille Models
Click on any of the images below to learn more about other side-folding security grilles that are available at Overhead Door Company of the Meadowlands & NYC.
Side-Folding Open Air Security Grille Models 681 - To Maximize Air Circulation
We deliver and install our doors and grilles, ensuring they meet the exacting manufacturer’s specifications. Protected by a 24-month OEM limited warranty, these grilles will provide years of durable and reliable service. We’ll respond promptly when you contact us today to discuss your specific project or application.