myNABCO

Overhead Concealed Operator

GT300 & GT8300 / Automatic

The GT300/8300 Overhead Concealed System is a heavy-duty solution that can handle busy pedestrian traffic. Its proven mechanical design delivers smooth, long-lasting operation and a flush swing arm provides a clean appearance. The door is supported by heavy-duty pivots on the top and bottom of the doorframe instead of on the operator shaft, 
which allows for convenient servicing without removing 
the door.

Photos
Features
Literature
  • Proven design for proven reliability
  • Arm is flush when door is closed for a sleek attractive appearance
  • Mechanical operator used with Basic Electronic or Microprocessor (standard) controller provides efficient, smooth operation
  • Adjustable closing speeds allow the door to close sooner for energy savings or slower for increased pedestrian protection
  • The door is supported by heavy-duty pivots on the top and bottom of the door frame instead of on the operator shaft, allowing for convenient servicing without having to remove the door
  • Optional length headers for improved appearance
  • Heavy-duty spring closer
  • Heavy-duty all steel motor and mechanical gear box outperforms the competition
  • Panic breakout available for center pivoted doors – allows inswinging doors to swing out in case of emergency
  • Recycle feature available stops and reverses directions of swing path when an object is encountered for greater pedestrian protection
  • Available with bottom load or convenient sideload header
  • Sideload header access panel simply pivots up and locks into position, out of the way, enabling the operator to be quickly installed or removed for easy servicing while allowing the door to remain in a closed position, eliminating the loss of energy from within the building
  • Works with new or existing door frames
  • Seamless interface with a variety of activation devices and auxiliary equipment including fire alarm systems
  • Meets ANSI Standard 156.10 when used with mats, Acusensor 3, or OA Edge Sensor System
  • UL / ULC and CSFM approved

    Select a product

    Literature Type

    • All
      • All
      • Sales Sheets
      • Owner's Manual
      • Specifications
      • Architectural Drawings
      • Product Manuals
      • Archived Manuals
      • Technical References
      • Technical Bulletins
      • Technical Newsletter
    • Sales Sheets
      • GT300/8300 Overhead Concealed Operator pdf |
    • Owner's Manual
      • C-00110 Owner’s Manual, Full Automatic Swing Operators pdf |
      • C-00345 Owner’s Manual, Full Automatic Swing Operators – French Rev 4-10-18 pdf |
    • Specifications
      • GT300 & 8300 Swing Operator Specifications pdf |
    • Architectural Drawings
      • Bottom Load Header – Center Pivot – Left Hand Inswing (GT300-01L) pdf | dwg |
      • Bottom Load Header – Butt Hinge – Left Hand Inswing (GT300-01LB) pdf | dwg |
      • Bottom Load Header – Center Pivot – Right Hand Inswing (GT300-01R) pdf | dwg |
      • Bottom Load Header – Butt Hinge – Right Hand Inswing (GT300-01RB) pdf | dwg |
      • Bottom Load Header – Center Pivot – Left Hand Outswing (GT300-02L) pdf | dwg |
      • Bottom Load Header – Butt Hinge – Left Hand Outswing (GT300-02LB) pdf | dwg |
      • Bottom Load Header – Center Pivot – Right Hand Outswing (GT300-02R) pdf | dwg |
      • Bottom Load Header – Butt Hinge – Right Hand Outswing (GT300-02RB) pdf | dwg |
      • Bottom Load Header – Center Pivot – Simultaneous Pair Inswing (GT300-03) pdf | dwg |
      • Bottom Load Header – Butt Hinge – Simultaneous Pair Inswing (GT300-03B) pdf | dwg |
      • Bottom Load Header – Center Pivot – Simultaneous Pair Outswing (GT300-04) pdf | dwg | rfa |
      • Bottom Load Header – Butt Hinge – Simultaneous Pair Outswing (GT300-04B) pdf | dwg | rfa |
      • Bottom Load Header – Center Pivot – Dual Inswing/Outswing (GT300-05) pdf | dwg |
      • Sideload Header – Center Pivot – Left Hand Inswing (GT8300-01L) pdf | dwg |
      • Sideload Header – Butt Hinge – Left Hand Inswing (GT8300-01LB) pdf | dwg |
      • Sideload Header – Center Pivot – Right Hand Inswing (GT8300-01R) pdf | dwg |
      • Sideload Header – Butt Hinge – Right Hand Inswing (GT8300-01RB) pdf | dwg |
      • Sideload Header – Center Pivot – Left Hand Outswing (GT8300-02L) pdf | dwg |
      • Sideload Header – Butt Hinge – Left Hand Outswing (GT8300-02LB) pdf | dwg |
      • Sideload Header – Center Pivot – Right Hand Outswing (GT8300-02R) pdf | dwg |
      • Sideload Header – Butt Hinge – Right Hand Outswing (GT8300-02RB) pdf | dwg |
      • Sideload Header – Center Pivot – Simultaneous Pair Inswing (GT8300-03) pdf | dwg |
      • Sideload Header – Butt Hinge – Simultaneous Pair Inswing (GT8300-03B) pdf | dwg |
      • Sideload Header – Center Pivot – Simultaneous Pair Outswing (GT8300-04) pdf | dwg |
      • Sideload Header – Butt Hinge – Simultaneous Pair Outswing (GT8300-04B) pdf | dwg | rfa |
      • Sideload Header – Center Pivot – Dual Inswing/Outswing (GT8300-05) pdf | dwg |
    • Product Manuals
    • Archived Manuals
      • C-00185 OPUS Retrofit Kit Installation Manual Rev 4-23-18 |
      • C-00139 Opus Control Wiring and Programming Installation Manual, Rev 10-23-18 |
      • C-00139 Opus Control Installation Manual, Rev 3-30-17 |
      • C-00169 Wiring and Programming Manual, OPUS control, rev 6-13-16 |
      • C-00185 Quick Setup & Parts Guide, Opus Retrofit Kit, rev 6-13-16 |
      • C-00175 Quick Setup & Parts Guide, GT(8)300, GT(8)350 OHC Opus Swing Operator, Rev 8-10-16 |
      • C-00175 Installation Manual, GT(8)300, GT(8)350 OHC Opus Swing Operator, Rev 5-23-18 |
      • C-00185 OPUS Retrofit Kit Installation Manual Rev 9-22-16 |
      • C-00139 Quick Setup & Parts Guide – Opus Control, Rev 6-13-16 |
      • C-00175 Installation Manual, GT(8)300, GT(8)350 OHC Opus Swing Operator, Rev 12-10-18 |
      • C-00139 Opus Control Wiring and Programming Installation Manual, Rev 5-16-19 |
      • C-00139 Opus Control Wire and Programming |
      • Service Parts – GT300 OHC Analog Control Single – 2012 and earlier (note not all parts many be available) |
      • C-00139 Opus Control Installation Manual, Rev 11-4-16 |
      • Service Parts – GT300 OHC Analog Control Simultaneous Pair – 2012 and earlier (note not all parts many be available) |
      • Service Parts – GT300 Single OHC Magnum 2, 3 & 4 Control – 2012 and earlier (note not all parts many be available) |
      • Service Parts – GT300 Simultaneous Pair OHC Magnum 2, 3, & 4 Control – 2012 and earlier (note not all parts many be available) |
      • Service Parts – GT300 Single OHC U19 and earlier Control – 2012 and earlier (note not all parts many be available) |
      • Service Parts – GT300 Simultaneous Pair OHC U19 and earlier Control – 2012 and earlier (note not all parts many be available) |
      • C-00093 Quick Setup & Parts Guide, Magnum control, GT(8)300, GT(8)350 OHC Swing Operator, Rev 8-10-16 |
      • Service Parts – GT350 Single OHC Analog Control – 2012 and earlier (note not all parts many be available) |
      • 15-12439 Relay & Socket Instruction Sheet Rev 2-3-10 |
      • Service Parts – GT350 Simultaneous Pair OHC Analog Control – 2012 and earlier (note not all parts many be available) |
      • Service Parts – GT350 Single OHC Magnum 2, 3 & 4 Control – 2012 and earlier (note not all parts many be available) |
      • Service Parts – GT300/350 OHC Magnum 2, 3, & 4 Control Simultaneous Pair – 2012 and earlier (note not all parts many be available) |
      • C-00084 Wiring and Adjustment Manual with Magnum 4A Control – Rev 9-9-16 |
      • C-00184 Installation Manual, GT300-8300-350-8350 Swing Door Operator, OHC, with Opus Control, Rev-5-26-16 |
      • 10-2207 Time-Delay-Model-2200 for Analog Control Rev 06-22-00 |
      • 14-12121-20 Acugard and U series quick set-up sheet, Rev 11-12-08.pdf |
      • 14-2182 Soft-Start-Harness-Instructions, for Analog Control Rev 1-1-02 |
      • 15-10682 – Wiring and Adjustment Magnum Manual, Rev-11-4-15 |
      • 15-10744 Installation Manual, GT300 & 8300, Rev 9-19-14 |
    • Technical References
    • Technical Bulletins
    • Technical Newsletter