a stud less wall construction the acoustic and combustion properties of the compressed straw panels are of particular importance to the invention disclosed herein a 2 u00bc u2033 thick panel has class a flame spread rating fsi 10 sdi 45 as tested and rated according to astm e 84 and an stc and r w rating of 36 as tested and rated according to astm e90 99 e413 87 e1132 90 and iso 717 the preferred embodiment herein disclosed infra provides a one hour fire rating on both sides as tested and rated according to astm e 119 the detailed description will continue with a figure by figure view of each embodiment of the subject wall construction fig2 a shows a cutaway isometric view of the preferred embodiment as illustrated the wall construction disclosed herein comprises a substantially sandwich configuration wherein each component is aligned in a substantially planar relative configuration compressed straw panel 1 is attached on first face to a plurality of rail channels 5 via attachment means 10 said attachment means 10 may be a penetrating fastener such as a nail or screw a strong adhesive such as an epoxy resin or any combination thereof attachment means 10 are illustrated herein as penetrating fasteners said rail channels 5 are then attached to a first gypsum board sheet 3 via attachment means 10 again said attachment means 10 may.