Rolling Counter Fire Doors
are rated physical fire barriers that protect wall openings from the spread of
fire. They provide automatic closing in the event of fire detection with
governed speed control. Fire doors are also designed for daily use to provide
security and access control, but are for use in openings that are not part of a
required means of egress. Cornell offers a complete line of labeled rolling
doors for protection in wall openings where rated doors are required by
building codes and for insurance purposes.
Labeling: 4 HR, 3 HR, 11/2 HR, 1 HR and 3/4 HR Underwriters' Laboratory
(UL) labels Factory Mutual Research Corporation's Approval
Standard construction for openings up to 34 wide, 30 high or 768 square feet.
Consult factory for larger size doors.
SmokeShield® Fire Doors: Add UL labeled smoke and draft control to fire
doors. Containing smoke saves lives and building property and also aids in fire
containment by slowing oxygen flow to the fire source. It's simple to double up
on the protection of your building and may be required by your local building
code. Be sure to add SmokeShield protection to all your Fire Door products. For
more information click here .
Finishes: curtains are available in 22, 20 and 18 gauge galvanized steel
with exclusive GalvaNex finish in light gray, powder coating as an
available option, or 20 gauge 300 series stainless steel with #4 finish.
Stamped steel or cast iron endlocks are provided per UL procedure.
Mounting: Face of wall or between jambs configurations in both interior and
exterior walls. Approved wall types for the mounting of fire doors include
masonry or structural steel jambs.
Fire Door System
Operation: M100 motor, chain or crank operating systems are recommended for
ease of testing and controlled automatic closing speed. Click on the Operator
Information button at right for a full description of these systems.
door automatic closing systems release spring tension and require mechanical
resetting by a trained door systems technician. Although these old fire door
systems are available and frequently specified, the industry has evolved to
address todays issues of annual door testing requirements, more frequent
alarm testing, recessed installation and power outages. Cornell strongly
recommends you consider the safety and convenience advantages our M100 Closing
All Cornell fire
products are provided with a multiple fuselink set-up to close the door
automatically when any link melts. Standard fuselinks are designed to melt at
165° F and are to be located at the ceiling level above the fire door. For
units with an automatic closing system or tied into an alarm system or local
detectors, a fuselink set-up is still provided as a back up mechanical closing
Options Releasing devices are electro-mechanical devices that enable
non-M100-motor automatic closing fire doors to respond to alarm signals from
detection devices such as smoke detectors, heat detectors and central alarm
systems. This permits closing the door before high temperatures melt the
fusible link. Fusible links should always be used as back up to the releasing
This device is activated by detection systems and is fail-safe by design,
causing an open door to close in the event of a prolonged power failure
(generally, longer than 10 seconds). Designed to accept input voltages of 120
volt and 24 volt AC or 24 volt DC, its adaptability simplifies planning and
enhances serviceability. The SS90-B is UL listed with adjustable time delays
for short power outages or alarm signals. When a remote down limit
switch is added, this device also offers Down Limit Detection, which prevents
mechanical release of a fully closed fire door.
Includes all the features of the SS90-B unit, but utilizes a 120 volt AC
input voltage to maintain its battery back-up system that continues to power
the release device and up to four local smoke detectors and/or warning devices
up to 72 hours during a power outage.
Options Optional Sounder/Strobe or Voice Warning Modules can be tied into
SS90 release devices to safely preannounce closing of the fire door.
Sounder/Strobe: ADA compliant, this 120 volt AC warning
device may be utilized with the SS90-B release device, but is non-fail-safe and
will not function in the event of a power failure. A fail-safe, 12 volt DC
version may be used with the SS90-B2 and is powered by the release
devices battery source to provide advanced warning, even during a power
Module: An optional warning device for use with SS90-B2 release devices.
The voice warning is in English, other languages are available, and is not ADA
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