Temperature rise ratings are 250°F, 450°F, and 650°F, which indicates the non-fire side of the door will not exceed that temperature for 30 minutes. The 250°F temperature rise designation is the most stringent rating of the three because it allows for the least transfer of heat.
As with all doors, these specialty products vary in quality from one manufacturer to the next. The SDI Certified manufacturers below have been audited to ensure they meet or exceed our standards. Click the logos below to view their temperature rise doors.