Auto-Set® Model S4000

Side Acting Fire Door System

The automatic resetting S4000 is a side coiling fire and smoke rated door. The S4000’s side activated design makes this product ideal for openings in rated walls where headroom is limited and enables the door to navigate around tight curves and contoured openings. S4000 fire door systems are ideal for schools, hospitals, casinos, retail and museums, or any finished area. The S4000 provides a solid solution for fire protection in area separation walls, occupancy separations, and corridor separations Model S4000 is available without a floor track. This technology is the subject of US Patent Nos. 8,307,877 and 9,267,326.


3-hour rated UL 10B*

Available with a temperature rise rating of 650°F over 30 minutes when required, single parting only

Smoke & Draft labeled UL 1784 *Listed under the Canadian equivalent CAN/ULC S104

Code Compliance


ADA compliant Regulatory Approvals


Not applicable


Auto-Set® automatic resetting

Fail-Safe Design – automatic self-closing mechanism does not require power operation

Auto-Set® S4000 Training Demonstration Video


Widths to 80′ (160′ bi-parting), heights to 24′; for larger sizes and custom configurations consult the factory

Negotiates 1′-6″ radius curves


McKEON Sterling Gray

Powder coat of any color as selected

Stainless Steel — No. 4 Polish or No. 8 Mirror