Frequently Asked Questions for the Model 400 Smoke Curtain
- How is the Smoke Guard system M400 listed and labeled?
Smoke Guard system (SGS) products are listed and labeled by Intertek (Omega Point Laboratories and ETL) in accordance with UL 1784 and UL 864 standards. Our systems are also recognized by the International Code Council (ICC) Evaluation Service, the California State Fire Marshal, and numerous state and local building jurisdictions. The Smoke Guard system exceeds the smoke containment standards prescribed in the International Building Code (IBC). See our Agency Approvals page for more information on our product listing and labeling.
- What is a "head mount"?
A head mount is a Smoke Guard system (SGS) housing is mounted directly above the elevator door frame.
- What is a "high mount"?
A high mount is a Smoke Guard system (SGS) housing is mounted in ceiling or valence above the top of the elevator door frame.
- What is a "ferrous metal" frame?
Ferrous metals contain contain iron, and magnets adhere or are attracted to ferrous metal surfaces. The Smoke Guard system requires a 2-inch wide continuous flat ferrous metal surface for deployment. If you are looking for a ferrous stainless steel option, elevator manufacturers often have a 430 stainless steel option for elevator door frames — just ask them.
- What are "stub" rails?
When the Smoke Guard system (SGS) is installed using existing ferrous metal elevator doorframes in a high mount configuration "stub rails" are used to span the gap. Stub rails are short auxiliary rails that maintain a continuous 2-inch flat metal surface for the SGS to adhere to between the bottom of the housing and the top of the elevator door frame.
- Does the Smoke Guard system interfere with elevator door operations?
No. The Smoke Guard system (SGS) provides a smoke- and draft-control assembly for the fire-rated elevator door frame. The SGS is a smoke resistant gasket mounted on the face of the elevator doorframe which allows the elevator to function without interfering with elevator door operation.
- How does the unit deploy in the event of a fire?
The release mechanism of the Smoke Guard system (SGS) is connected to a UL listed smoke detector (UL Standard 268) required by code at the elevator landing. When smoke is detected, the release mechanism activates SGS deployment. The SGS curtain covers the elevator openings on the floor where smoke was detected.
- What does "return" mean when I am specifying the Smoke Guard system?
We refer to the depth or distance between the wall and the face of the elevator door frame as a "return". Model 400 has specific returns associated this system, consult your local SGS distributor or SG Customer Service on return sizes for your project.
- Does the curtain stop if someone or something gets in the way while it deploys?
The Smoke Guard system (SGS) Model 400 is a fail safe device that is gravity deployed. This unit will stop only when the curtain assembly encounters the floor.
- What kind of warranty is provided by Smoke Guard, Inc.? When does the official warranty period begin?
Smoke Guard, Inc. provides a one-year warranty for the Smoke Guard system (SGS). The warranty period runs twelve months from the date that the project in which they are installed is turned over to the owner.
- What is the recommended maintenance schedule for the Smoke Guard system?
Each Smoke Guard system (SGS) unit should be exercised once every six months to verify deployment of the screen.