Fire resistant barrier

Abstract

A fire resistant assembly, which may comprise a first layer having a lumen therein, a second layer adjacent the first layer, a first structural member disposed between the first and second layers, and a box having a cavity defined by a wall, a first opening in the wall, a flange proximate the first opening, and optionally a second opening in the wall, wherein the box is disposed between the first layer and the second layer and wherein the opening is disposed on the lumen of the first layer, the box comprising a further fire resistant feature such as an intumescent ring disposed about the second opening, a plenum wrap layer, or an intumescent layer, and various methods and apparatuses related thereto.

1 . A kit for a fire resistant assembly, comprising:
 a box having a cavity defined in part by a plurality of walls, said walls having an inside surface and an outside surface;   a first opening to the cavity;   a flange proximate the first opening; and   a quantity of plenum wrap.   
     
     
         2 . The kit of  claim 1 , wherein the quantity of plenum wrap is sufficient to cover the exterior of walls of the box. 
     
     
         3 . The kit of  claim 1 , wherein the quantity of plenum wrap is sufficient to cover the interior of walls of the box. 
     
     
         4 . The kit of  claim 1 , wherein the box further comprises a second opening and an intumescent ring around the second opening. 
     
     
         5 . The kit of  claim 1 , wherein an angle between the flange and one of the walls is approximately 90 degrees. 
     
     
         6 . The kit of  claim 1 , wherein an angle between the flange and one of the walls is greater than 90 degrees. 
     
     
         7 . The kit of  claim 1 , wherein the walls comprises material having melting temperature greater than 1700° Fahrenheit. 
     
     
         8 . The kit of  claim 1 , wherein the walls comprises steel that is at least as thick as 30 gauge steel. 
     
     
         9 . The kit of  claim 1 , wherein the walls comprises steel that is at least as thick as 24 gauge steel. 
     
     
         10 . The kit of  claim 1 , wherein at least one of the walls comprises a removable area defined by one or more narrow grooves. 
     
     
         11 . The kit of  claim 1 , having an American society for the testing materials (ASTM E 119) fire endurance rating of 2 hour or its equivalent. 
     
     
         12 . The kit of  claim 1 , further comprising a label certifying the box to have the American society for the testing materials (ASTM E 119) fire endurance rating. 
     
     
         13 . The kit of  claim 1 , further comprising a quantity of foil tape. 
     
     
         14 . The kit of  claim 1 , further comprising a quantity of high temperature adhesive.