a plurality of v shaped grooves 68 extending the length of the main or base portion 34 which allow the width of the base portion to be adjusted to closely conform to width of the framing with which it is to be employed the legs 36 38 are preferably formed without the kink or bend found in the first embodiment a series of mounting bores 70 extend along the legs for the length of the device these bores are typically 3 8 inch from the free end of the leg the embodiment may be preferably formed from 0 015 to 0 020 inch thick aluminum or galvanized steel because the device is intended to be used at a point in construction or renovation where the wall framing has sheathing a first wall surface material applied the width of the main body portion 34 is typically 43 16 inch for use with 2 by 4 stud construction the height of the legs is 11 2 inches as shown in fig7 installation of the device in connection with a window opening as depicted in fig7 is as follows an extended length of sleeve device is cut to the length of one of the jambs typically the sill 26 the cut length 72 is mounted on the sill leveled and affixed in place using fasteners through the bores 70 a second length 74 is then cut to proper dimension and installed upon the right side stud 76 for the opening the length is squared to the first length 72 placing the length deeply on the stud.