referring to fig1 - 3 , a spacer panel incorporating the principles of the instant invention can best be seen . the spacer panel 10 is preferably formed from polyvinyl chloride ( pvc ) film ( not shown ) having a thickness of about 12 to 16 mil through a conventional vacuum molding process in which the film is placed over a mold ( not shown ) and heated . a vacuum applied to the film draws the pvc film over a mold to cause the pvc film to assume the shape of the mold . while pvc film is the preferred material from which the spacer panel 10 is formed through the thermal molding , vacuum forming manufacturing process , one of ordinary skill in the art will recognize that other materials may be used in the manufacture of the spacer panel 10 , such as thermoplastics and composite materials composed of fibers impregnated with thermoplastic materials . thermoplastic materials that can be used in the present invention in addition to pvc film are , for example , polystyrenes , acetals , nylons , acrylonitrile - butadiene - styrene ( abs ), styrene - acrylonitrile ( san ), polyphenylene oxides , polycarbonates , polyether sulfones , polyaryl sulfones , polyethylene , polystyrene , terephthalates , polyetherketones , polypropylenes , polysilicones , polyphenylene sulfides , polyionomers , polyepoxides , polyvinylidene halides , and derivatives and / or mixtures thereof . the particular material used may depend upon the desired end use and the application conditions associated with that use , as is well known in the art . the spacer panel 10 is preferably formed in a sheet configuration to conform to conventional building materials typically handled by contractors , such as plywood and osb sheeting , in order to provide a comfort level to the installers of the spacer panel 10 . the first embodiment of the instant invention shown in fig1 - 3 is not capable of being rolled ; however , the second embodiment shown in fig4 - 6 includes flat areas between the spacer members , as will be described in greater detail below , and could be formed in a continuous web that is rolled for shipment and handling at the job site . the first embodiment of the spacer panel 10 is formed with a set of first spacer members 12 projecting upwardly from a central panel member 15 and a set of second spacer members 17 extending downwardly from the central panel member 15 . the reference to upward and downward are used as a matter of convenience and reflect only that the set of first spacer members 12 project out of the central panel member 15 from one face while the set of second spacer members 17 project out of the central panel member 15 from the opposing face of the panel member 10 . as can be seen in fig1 , the first and second panel members 12 , 17 are arranged in a herringbone pattern that orients the spacer members 12 , 17 at approximately forty - five degrees to either major axis of the spacer panel 10 . furthermore , with respect to either major axis of the spacer panel 10 , the first and second spacer members 12 , 17 overlap , which eliminates any open path of the central panel 15 that would extend along either major axis . as a result , the first embodiment of the spacer panel 10 will not be able to be rolled and , thus , must be formed as a generally flat panel . the first and second spacer members 12 , 17 are tapered to be slightly narrower as they project from the central panel 15 and , thus , are shaped to permit nesting so that the spacer panels 10 can be compactly stacked on top of one another for efficient shipping and handling . each spacer member 12 , 17 is formed independently of each other spacer member 12 , 17 , so the resistance to compression is not dependent on the integrity of the adjacent spacer element 12 , 17 . accordingly , each spacer member 12 , 17 is surrounded by a planar portion 16 of the central panel member 15 . the planar portions 16 of the central panel member 15 provide a location at which perforations can be positioned to provide a flow communication between the opposing faces of the spacer panel 10 . these perforations ( not shown ) can be formed in a regular pattern throughout the spacer panel 10 or in a random pattern . the top surface 13 of each spacer member 12 , 17 provides a large planar surface on which an adhesive can be applied to the spacer panel 10 in order to mount a barrier member 19 , formed of paper or plastic film , that would be operable to keep masonry material out of contact with the spacer panel 10 , as can be seen in fig8 . the barrier member 19 can be applied on the job site before or after the spacer panel 10 is mounted on the building substructure , or the barrier member 19 can be applied to the spacer panel 10 by the manufacturer , although such application of the barrier member 19 will prevent the spacer panels 10 from nesting and achieving a compact shipping configuration . furthermore , the spacer panel 10 is omni - directional in that the spacer panel 10 can be mounted on the building substructure with either major axis of the spacer panel 10 being oriented vertically . the independently formed spacer members 12 , 17 with planar portions 16 of the central panel member 15 surrounding each spacer member 12 , 17 define a flow path along both faces of the spacer panel 10 to permit moisture to flow downwardly along the central panel member 15 . perforations along the planar portions 16 of the central panel member 15 allow moisture to migrate from one side of the central panel member 15 to the other . one skilled in the art will recognize that the tapered rectangular spacer members 12 , 17 provide a shape and configuration that establishes a resistance to compression from the mounting of the exterior covering materials , as will be described in greater detail below , while establishing a substantial surface on which a barrier member 19 can be mounted . however , other shapes and orientations of spacer members 12 , 17 will fall within the scope of the instant invention , including round , oval , triangular or any other geometric shapes . furthermore , the orientation of the spacer members 12 , 17 can be in patterns other than the herringbone pattern as shown in fig1 - 3 , including a horizontally and vertically linear pattern . referring now to fig4 - 6 , the second embodiment of a spacer panel 20 can best be seen . the spacer members 22 are formed with a component that projects to either side of the central panel member 25 , as will be described in greater detail below . the spacer members 22 are generally circular in shape and are arranged in a horizontally and vertically linear pattern with each succeeding row being located in an offset manner with respect to the rows of spacer members 22 in the adjacent rows . as with the first embodiment of the spacer panel 10 , each spacer member 22 is independently formed and a planar portion 26 of the central panel member 25 surrounds each spacer member 22 . depending on the ultimate size of the spacer members 22 and the compactness of the rows of spacer members 22 , an open path of the central panel member 25 can be established in the direction of either major axis of the panel member 20 , which could enable the panel member 20 to be rolled . as will be described below , the spacer members 22 are configured to nest , which would enable the panel member 20 to be either rolled or stacked in a compact arrangement . each spacer member 22 is formed , as can best be seen in fig6 , with a first circular component 24 the projects downwardly from the central panel member 25 and a second truncated conical member 27 that extends upwardly from the first circular component 24 to project above the central panel member 25 . thus , each spacer member 22 extends on both sides of the central panel member 25 . this spacer member 22 configuration presents a shape that is highly resistant to compression . the upwardly extending truncated conical component 27 is tapered , narrowing upwardly , so that the spacer members 22 will nest into one another whether rolled or stacked . as with the first embodiment of the spacer panel 10 , the planar portions 26 of the central panel member 25 provide an appropriate location for the insertion of perforations to permit moisture to migrate from one side of the central panel member 25 to the other . these perforations can be formed in a regular pattern over the spacer panel 20 or irregularly without diminishing the capability of the spacer members to resist compression from the attachment of the exterior surface materials to construct the building wall . each of the truncated conical components 27 terminates in a planar top surface 23 which provides an adequate surface area for holding adhesive for mounting a barrier member 19 , as is depicted in fig7 . the arrangement of the spacer members 22 over the central panel member 25 provides a flow path for moisture on either side of the central panel member 25 . each of the circular first components 24 are also tapered to allow nesting of the spacer members 25 ; however , this tapered wall of the first circular component 24 , which is best seen in fig6 , will also provide a downward slope for the drainage of any moisture that might enter into the circular depression formed by the first component 24 , irrespective of the direction the spacer panel 20 is mounted on the building substructure . looking now at the schematic section of a representative wall construction depicted in fig9 , one skilled in the art will note that the spacer panel 10 or 20 , the second embodiment being depicted , is placed between the building substructure 30 which is formed of vertical studs 31 supported on a wall plate 32 and having sheathing material 33 fastened with nails or screws , or other fastening devices , to the vertical studs 31 on the outside surface thereof . a protective barrier 34 is wrapped around the sheathing material 33 to stop air and moisture infiltration into the building substructure 30 . the spacer panel 20 is then attached to the sheathing material 33 on the outside of the protective barrier 34 by nails , staples or other appropriate fastening devices . preferably , for masonry exterior coverings 35 , the spacer panel 20 will have a barrier member 19 attached to the top surfaces 23 of the spacer members 22 , preferably through the application of adhesives to bond the barrier member 19 to the spacer members 22 . the application of masonry material 35 , shown schematically as bricks with mortar joints , starts with the attachment of a wire mesh to the barrier member 19 by inserting fasteners ( not shown ) that extend through the barrier member 19 and the spacer panel 20 into the sheathing material 33 . thus , the resistance to compression for the spacer panel 20 becomes quite critical in the future operation of the spacer panel 20 . if the driving of the fasteners to attach the wire mesh collapses the spacer panel 20 , the drainage paths created by the spacer members 22 will be destroyed allowing moisture to accumulate behind the masonry material 35 . since the spacer members 22 , and 12 , 17 on the first embodiment of the spacer panel 10 , are highly resistant to compression , the attachment of the wire mesh does not collapse the spacer panel 20 . the masonry exterior in the form of brick or stone with mortar joints , or stucco or related material , cannot pass through the barrier member 19 to clog the drainage paths between the conical components 27 of the spacer members 22 . for siding exterior materials ( not shown ), the wire mesh is not attached to the sheathing material 33 , but nails or other fasteners are driven through the siding materials to engage the sheathing material 33 , passing through the spacer panel 20 . again , the resistance to compression in the spacer panel 20 is able to prevent the collapse of the drainage paths on either side of the central panel member 25 . it will be understood that changes in the details , materials , steps and arrangements of parts which have been described and illustrated to explain the nature of the invention will occur to and may be made by those skilled in the art upon a reading of this disclosure within the principles and scope of the invention . the foregoing description illustrates the preferred embodiment of the invention ; however , concepts , as based upon the description , may be employed in other embodiments without departing from the scope of the invention .