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City-Gates 
Since 1955, coiling, overhead, rolling steel, insulated, ventilated, garage, service doors, access controls, gates, fences and UL classified automatic reset fire rated doors for up to 3 hours. Horizontal Coiling Doors up to 20 feet wide. Full size shop drawings and CSI specifications available.
![[Cornell Iron Works]](../../mfg/c/cornell04.jpg)
Cornell Iron Works 
A quality driven ISO 9001:2000 registered rolling door company serving the non-residential construction market in North America and beyond with rolling service, insulated and fire rated doors, counter doors and grille products. Let our architectural design specialists assist you with product design, code issues, features or options or provide job specific project details and specifications.
Dynamic Closures
Dynamic Closure's grilles and closures have been the ideal choice to secure openings for many years. Used in shopping malls, schools, food concessions, office buildings, supermarkets and pharmacies to provide security that is easy to use and takes up minimal side clearances.
QMI Security Solutions
StoreSafe® and CounterSafe® Rolling Shutters and Grilles are designed to give the utmost in security with unmatched aesthetics and visibility. Enables security with vision using punched slats, linked grilles, or Transparoll clear polycarbonate slats while maintaining a small coil-housing diameter. QMI leads the retail and pharmacy industry for door, window, and counter security.
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See also: 08 3500 - Folding Doors and Grilles
City-Gates
Since 1955, coiling, overhead, rolling steel, insulated, ventilated, garage, service doors, access controls, gates, fences and UL classified automatic reset fire rated doors for up to 3 hours. Horizontal Coiling Doors up to 20 feet wide. Full size shop drawings and CSI specifications available.
Cornell Iron Works
A quality driven ISO 9001:2000 registered rolling door company serving the non-residential construction market in North America and beyond with rolling service, insulated and fire rated doors, counter doors and grille products. Let our architectural design specialists assist you with product design, code issues, features or options or provide job specific project details and specifications.
Dynamic Closures
Dynamic Closure's grilles and closures have been the ideal choice to secure openings for many years. Used in shopping malls, schools, food concessions, office buildings, supermarkets and pharmacies to provide security that is easy to use and takes up minimal side clearances.
QMI Security Solutions
StoreSafe® and CounterSafe® Rolling Shutters and Grilles are designed to give the utmost in security with unmatched aesthetics and visibility. Enables security with vision using punched slats, linked grilles, or Transparoll clear polycarbonate slats while maintaining a small coil-housing diameter. QMI leads the retail and pharmacy industry for door, window, and counter security.