The Hot Shield® Fire Resistant Respirator Housing, Model HS-4, is designed by firefighters EXCLUSIVELY for the Sundstrom SR-100 Half Face Respirator. The HS-4s' patented design provides a high degree of thermal protection to face & neck areas, and to the respirator itself, using CarbonX, a highly thermally resistant fabric. CarbonX is a proprietary material that far exceeds the Radiant Protective Performance requirements of NFPA #1977, NFPA #1971 & NFPA #2112. The combination of the HS-4 Fire Resistant Mask Housing with the Sundstrom SR-100 equals easier breathing and greater comfort, even when used for prolonged periods. This special combo allows “fit testing” of individuals because it does not not interfere with fit, form or function.



★Designed by firefighters for firefighters

★3M Scotchlite Reflective Trim for nighttime visibility

★One size fits all


Also available: The HS-4 Combo (Sundstrom Wildland First Responder Kit, the Hot Shield Fire Resistant Housing and the Web Case Carry Pouch) is the complete turnkey solution.

Hot Shield® HS-4 Fire Resistant Housing for Sundstrom Respirator SR-100

  • Machine washable