Once the fire reaches equilibrium in the positive pressure zone, smoke, hot gases and flames are forced through any openings in the door or window assembly. The time, in minutes or hours, that materials or assemblies can be expected to prevent flames and smoke from spreading.Īs heat develops within the source area, pressure within the enclosed room begins to build relative to the pressure outside. Therefore assembly is classified as a wall assembly, and not subject to “opening” area limitations.įireframes Designer Series Temperature Rise Doors with Pilkington Pyrostopįireframes Heat Barrier Series Temperature Rise Doors with Pilkington Pyrostop ** 60 and 120-minute tests conducted per UL 263 / ASTM E-119. ![]() * 45 minute window systems are classified as an Opening Protective as per UL 9 with a maximum overall frame size of 152 square feet. ![]() ![]() MAXIMUM SIZE Maximum Allowable Size Information
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