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When you need an interior or exterior closure option that is secure, durable, customizable and compact – you need a Cornell Service Door. Our rolling steel Service Doors feature a rugged design manufactured with quality materials that lower the total cost of ownership.

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Service Doors, also known as overhead coiling doors or rolling steel doors, are metal slatted doors that roll up to store in coil above the opening.  Our doors can open by motor, chain, hand-crank, or push-up operation, depending on size, weight and/or frequency of operation.

Our Service Doors are:

  • Customizable:  Cornell’s doors are custom built to fit your opening size, operation and aesthetic preferences.
  • Space Saving:  Our doors roll upward and store in a tight coil above the opening for fuller use of the interior space, reducing interference with other building components.
  • Long Lasting:  Cornell’s rugged construction and quality materials assure long life and less costly maintenance, lowering the total cost of ownership.

Sizes

Standard construction up to 30' wide, 30' high

Usage

The doors are constructed for daily use and can withstand operation of up to 20 cycles per day – that’s 50,000 cycles for the lifetime of the door. 

Standard Materials and Finishes

Standard door curtains are available in:

  • 24, 22, 20 and 18 gauge galvanized steel:
    • Exclusive GalvaNex™ finish in Gray, Tan, White or Brown provided as standard
  • 20 gauge 300 series stainless steel:
    • #4 finish
    • Structural stainless 
  • #16 B&S gauge aluminum:
    • Mill, clear or color anodized finish

Click here for additional material and finishes options and information

Aesthetics

Chain Diverter for MGH Operators

This option moves the auxiliary chain out of the clear opening and to the side of the door – enabling free movement through the door and making a chain bag unnecessary.

Fenestrated Slats

Slats with multiple small window size punched slots that create an open curtain design. Allows for ventilation and visibility while maintaining a high level of security. 

Hood and Operator Covers

Metal cover to protect the coil or operator from exterior weather, debris or to meet OSHA or UL 325 safety requirements.

Powder Coated Graphics

Permanent, durable faux finishes are available for rolling door curtains.  There are six wood grain options as well as the ability to use custom graphics, photos or logos.  Powder coated graphics give your doors a seamless, upscale look – either blending into the existing building architecture or transforming a building necessity into a work of art.

We can apply powder coated graphics to rolling doors 12’ wide and under, on standard, insulated or perforated slats.  Extended lead times apply – please consult the factory for additional details.

SpectraShield™ Powder Coating

Polyester finish in more than 180 colors for durability, aesthetics, superior finish life and cost effectiveness.

Vinyl Graphics

Add durable, full-color images to your curtains and hoods. Great for school logos and turning unused door space into profitable sponsorship opportunities in stadiums, amusement parks and retail stores.

Vision Windows
Improve aesthetics and visibility with one- or two-way windows incorporated in the curtain.
ScreenGard

Achieve visibility and ventilation while maintaining security and insect control. Perforated 20 gauge galvanized steel slat provides approximately 22% open space.

Performance Upgrades

High Cycle Springs
Heavy duty springs manufactured to withstand cycles of 100,000.
Seismic Performance Validation

We can provide project specific seismic calculations for all coiling doors that are mounted Face of Wall or Between Jambs to steel or masonry. Seismic performance validation is per ASCE 7-05.

Safety and Protection

Entrapment Protection Devices

Entrapment protection devices ensure that a motorized door or grille will not close on an object.  If an object enters path of closure, the entrapment protection device will stop the door or grille from closing and return it to the fully open position.

Guide-Mounted Interlocks
An electrical cutout switch to prevent motor operation if locking device is not first disengaged.
Heavy Duty Bottom Bar (HDBB)

The HDBB is 350% stronger than traditional bottom bars, preventing forklift damage to your Service Door.  The HDBB can pay for itself after the first impact and significantly reduce future maintenance costs.

Locking

A wide variety of locking options are available to meet your security needs.

Motor Mounted Interlock

An overload sensing device that prevents damage if motor operation is attempted when the door or grille is locked. Field wired guide mounted interlocks are no longer necessary.

RapidResponse

RapidResponse doors are provided with 3' or 6' of extra curtain, an impactable bottom bar and removable lower guide sections.  These features allow for faster repair of slat damage, reducing downtime and maximizing the lifetime value of your door.

Rolling Door Protector (RDP)

The RDP eliminates costly fork truck damage to coiling doors by creating a physical barrier at the top of the door that absorbs impacts.   

WeatherGard™

Include weather seals at the guides and bottom bar with an internal hood baffle at coil housing. Lintel mounted nylon brush seal also available.

Wind Load
Can be configured to withstand the full range of specific wind load requirements including missile impact ratings.

Unique Design Solutions

Pass Doors
Hollow metal man door and hinged frame available within a curtain.
Sloping or Irregular Openings
Our special bottom bar designs can address these conditions.
Superimposed Doors
Combine two different curtains on the same opening. Typically, an insulated door is used in conjunction with an open design rolling grille to provide ventilation. When extreme weather or sound resistance is desired, we can provide superimposed/double insulated curtain assemblies.
Combination Doors

Combine two different curtains on the same opening. Typically, an insulated door is used in conjunction with an open design rolling grille to provide ventilation. When extreme weather or sound resistance is desired, we can provide superimposed/double insulated curtain assemblies.

Mullions
There are multiple mullion options -  corner, fixed and removable.