configurations of the present invention is shown in fig1 wherein the first upper insulation section 82 and the second upper insulation section 102 are formed as a single member which is defined in the figures herein as an upper insulation section 30 this single firestopping construction will effectively seal both sides of the head of wall area simultaneously by placement of a single fixture it is designed to be used below a ceiling 12 which includes a fluted ceiling deck 10 which defines at least one ceiling runner channel 11 therein with recessed areas 15 facing downwardly toward the head of wall area 25 therebelow the ceiling runner channels 11 will include upper recess panels 16 extending generally horizontally and including a first recess side panel 18 engaging the upper recess panels 16 and extending downwardly and outwardly therefrom and including a second recess side panel 20 engaging the upper recess panel 16 at a position spatially disposed from the first recess side panel 18 and extending downwardly and outwardly from the upper recess panel 16 in a direction extending away from the first recess side panel this configuration for the fluted ceiling deck 10 will be positioned above the head of wall area 25 below the head of wall area 25 the wall construction 13 will be defined extending generally vertically and will include a plurality of wall studs 23 of wood metal or other material with a first gypsum board construction 24 extending along one face thereof and second gypsum board construction 26 extending across the opposite face therefrom the head of wall firestopping construction usable with this embodiment of the present invention will.