positioning cutouts 37a 37n a suitable tool such as a wrecking bar or long screw driver can be inserted into one of the cutouts 37a 37n at an oblique angle and used as a prying tool against the bottom member 22 of the lower channel 14 to raise the upper channel 16 to a desired level where upon the appropriate shims are installed after shimming self tapping screws are installed as described in fig2 to fix and permanently secure the upper channel 16 to the lower channel 14 fig2 illustrates an exploded view of the adjustable sill plate assembly 10 where all numerals correspond to those elements previously described a plurality of slotted holes 42a 42n align along the bottom member 22 of the lower channel 14 for the accommodation of foundation mounted anchor studs 44 as required as illustrated in fig3 a plurality of self tapping screws 46a 46n or other suitable hardware members align through holes 48a 48n in vertical member 26 and secure into side 36 of the upper channel member 16 correspondingly another plurality of self tapping screws 50a 50n align in holes 52a 52n and secure into side 34 of the upper channel member 16 to secure and fix the upper channel 16 to the lower channel 14 fig3 illustrates an end view of the adjustable sill plate 10 suitably adjusted and secured to a foundation 12 where all numerals correspond to those elements previously described illustrated in particular are a plurality of shims 20 aligned through rectangular hole set 28a 28b shims 20 rest on the bottom member 22 of the lower channel to support planar members 38 and 40 of the upper channel 16 to provide a sill plate member 10 having been suitably.