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Model 109 / high performance roll-up doors for industrial applications

Low Profile Coiling Door for Limited Headroom and Tight Side Clearances

Marathon’s 109 low profile high performance roll-up door, with its low profile header and curved panel profile is ideal for applications with limited headroom and tight side clearances.  High speed operation ensures quick entrances and exits for superior access control. Reliable operation means lower maintenance costs and greater over-all security. Insulated slats and high speed operation reduce air exchange, lessen energy consumption and the “stack effect” that can occur in high rise applications.

Grill Options
Marathon’s 109, with grill option slates is ideal for parking garages, fleet garages, dock areas or any application requiring quick access, security and ventilation. And with no roller wheels, links, bars, tension systems or other high wear parts to replace, the 109G requires less maintenance than a standard roll-up grille style door.

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Door Sizes

  • Up to 26' W
  • Up to 22' H
  • Consult factory for specific application

Panel Construction

  • High density foam in place insulated slats with a “K” factor of .12 at 75°


  • PLC control panel
  • 2-speed operation
  • Open - up to 42 inches per sec
  • Adjustable closing speed
  • High output electric direct drive 3 h.p. totally enclosed motor available
  • Absolute encoded for calibrating limit position
  • NEMA 4 fiberglass control box

Performance Features

  • Reversing edge for instant stop/reverse
  • Send and receive reversing photoeye


  • Rigid, non-insulated anodized aluminum slats
  • Extra low profile (reduces overall height by 1")
  • Light curtain
  • Activation devices
  • Adjustable time delay close with auto close feature
  • Window slats (min.4 required) (Custom configurations available)
  • Perforated window slats (min. 4 slats required, slats used in full grille applications)
  • Non insulated perforated grill slats
  • Operator and barrel shrouds
  • Custom colors (anodized or painted)


  • Two year limited warranty on all components

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