Design Info & Specs

Standard Smoke Curtain incorporating fiberglass fabric.

DSI-A4HR Accordion Fire Curtain

The DSI Accordion Fire Curtain Model DSI-A4HR creates a four-hour opening protective fire barrier for a variety of applications without the need for columns or corner post. Applications include Atriums, Stairwells, Escalators, and other custom applications.

The curtain assembly comprises fire rated fiberglass fabric uniquely folded into a compact head box that is typically installed above the ceiling with a finished bottom tray. This makes the system virtually invisible until activated.

The DSI-A4HR Accordion Fire Curtain is totally gravity fail safe, resets automatically, and incorporates the latest in electronic technology. As a result, DSI-A4HR Accordion Curtain is one of the most advanced, yet cost effective systems on the market.

Features for DSI-A4HR Accordion Fire Protective Curtain:

  • Cost effective
  • Creates open space for your building design
  • Compact design , low headroom requirements
  • Almost completely hidden
  • Lightweight, requires little to no structural support
  • Unlimited width, custom sizes
  • Code compliant
  • Option for egress
  • Battery backup system standard
  • Fail safe system with automatic reset

Compliance to regulations

Door Systems has made considerable investments in global testing of its DSI Smoke and Fire Protective Curtains. The DSI Accordion series was put through its paces with various testing facilities.

Compliant with

UL 10 D: Fire protective Smoke Curtains – 4 hours
UL 1784: Air leakage test of door assemblies
ASTM E84: Class A Surface Building Characteristics of Building
UL 10 C: Without Hose Stream Test – 20 minutes
UL 10 B: Without Hose Stream – 20 minutes
UL 864: Control Units for Fire Protective Signaling Systems

Control Options

For full details, please refer to Group Control Panel (GCP) Datasheet or contact us at Door Systems®. Some of the options which are offered include (these may be limited dependent on fire strategy): Two Stage Descent, Delayed Descent, Obstruction Sensor, Audio / Visual alert, BMS, Emergency Retract and more.


Accordion headbox diagram
3 sided accordion diagram

Door Systems® smoke and fire protective curtain company is a nationwide company and it’s service areas include but not limited to the following cities and surrounding areas:

Albuquerque, Arlington. Atlanta, Austin, Baltimore, Boston, Charlotte, Chicago, Cleveland, Colorado Springs, Columbus, Dallas, Denver, Detroit, El Paso, Ft. Collins, Ft. Lauderdale, Fort Worth, Fresno, Hartford, Houston, Indianapolis, Jacksonville, Kansas City, Las Vegas, Long Beach, Los Angeles, Louisville, Memphis, Mesa, Miami, Milwaukee, Minneapolis, Nashville, Newark, New Orleans, New York City, Oakland, Oklahoma City, Omaha, Orlando, Philadelphia, Phoenix, Pittsburgh, Portland, Raleigh, Richmond, Rochester, Sacramento, Salt Lake City, San Antonio, San Diego, San Francisco, San Jose, Seattle-Tacoma, St. Louis, Tampa, Tucson, Tulsa, Virginia Beach, Washington DC, Wichita

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