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A siding system includes a plurality of siding panels having a substrate formed to define a plurality of decorative units. Each of the decorative units includes an average unit distance that is equal to the sum of an average width of the decorative units, and an average width of keyways separating t

A siding system includes a plurality of siding panels having a substrate formed to define a plurality of decorative units. Each of the decorative units includes an average unit distance that is equal to the sum of an average width of the decorative units, and an average width of keyways separating the decorative units. An actual centerline of each of the decorative units is horizontally located within a maximum offset tolerance of a theoretical horizontal center of each of the decorative units. The theoretical horizontal center of each of the decorative units is located at a center location distance measured from a first vertical edge of the substrate. A second siding panel is disposed vertically above a first siding panel when attached to the wall surface. The second siding panel is horizontally offset relative to the first siding panel a panel offset distance.

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1. A siding system for covering a wall surface, the siding system comprising: a plurality of siding panels configured to interlock with each other when installed, with each of the plurality of siding panels including: a substrate formed to define a plurality (n) of decorative units arranged in at le

1. A siding system for covering a wall surface, the siding system comprising: a plurality of siding panels configured to interlock with each other when installed, with each of the plurality of siding panels including: a substrate formed to define a plurality (n) of decorative units arranged in at least one horizontal row, with each of the decorative units defining a unit width, and with each adjacent pair of the decorative units separated by a keyway defining a keyway width;wherein each of the decorative units includes an average unit distance equal to the sum of an average width of the decorative units measured horizontally along the substrate and an average width of the keyways measured horizontally along the substrate;wherein a vertically extending actual centerline of each of the decorative units is horizontally located within a maximum offset tolerance of a theoretical horizontal center of each of the decorative units;wherein the maximum offset tolerance for each decorative unit is defined by the equation: M⁢⁢O⁢⁢T=(A⁢⁢U⁢⁢W2-K⁢⁢O-A⁢⁢U⁢⁢D4)⁢2wherein AUW is the actual unit width of each decorative unit, KO is one half (½) the average width of the keyways, and AUD is the average unit distance of the decorative units;wherein the theoretical horizontal center of each of the decorative units is located a Center Location Distance (CLD) measured from a first vertical edge of the substrate and defined by the equation: CLDU=(U−0.5)(AUD)wherein U is equal to the number of the specific decorative unit numbered sequentially from the first vertical edge of the substrate (1, 2, 3, . . . n), and AUD is the average unit distance of the decorative units;wherein the plurality of siding panels includes at least a second siding panel disposed vertically above a first siding panel when attached to the wall surface, with the second siding panel horizontally offset relative to the first siding panel by a panel offset distance defined by the equation: Panel Offset Distance=(n+0.5)(AUD)±(AUD)(Z)wherein n is the number of full decorative units (0, 1, 2, 3, . . . i) horizontally disposed within the panel offset distance, and Z is a variance factor between the range of 0% and 5.0% (between 0 and 0.05); andwherein the keyways of the first siding panel are not vertically aligned with any of the keyways of the second siding panel. 2. The siding system as set forth in claim 1 wherein the width of each of the decorative units is between the range of two inches (2″) and twelve inches (12″). 3. The siding system as set forth in claim 2 wherein the average unit distance is between the range of four inches (4″) and ten inches (10″). 4. The siding system as set forth in claim 3 wherein the average unit distance is between the range of six inches (6″) and seven inches (7″). 5. The siding system as set forth in claim 4 wherein the panel offset distance is equal to ten inches (10″). 6. The siding system as set forth in claim 5 wherein the total number of decorative units arranged on the substrate includes an odd number of decorative units. 7. The siding system as set forth in claim 6 wherein the total number of decorative units includes nine (9) decorative units. 8. The siding system as set forth in claim 1 wherein the maximum offset tolerance includes a pre-defined allowable maximum limit. 9. The siding system as set forth in claim 8 wherein the pre-defined allowable maximum limit of the maximum offset tolerance is equal to three inches (3″). 10. The siding system as set forth in claim 1 wherein each of the plurality of siding panels includes a plurality of different panel cut locations spaced at even increments of the panel offset distance from each other. 11. The siding system as set forth in claim 10 wherein each of the plurality of siding panels includes an even number of panel cut locations. 12. The siding system as set forth in claim 11 wherein each of the plurality of siding panels includes an average unit distance equal to six and two thirds inches (6.667″), a panel offset distance equal to ten inches (10″), and six (6) panel cut locations. 13. The siding system as set forth in claim 10 wherein each of the plurality of siding panels includes indicia indicating each panel cut location. 14. The siding system as set forth in claim 13 wherein the indicia indicating the panel cut locations includes a first indicia symbol for odd numbered vertically stacked courses of the siding panels, and a second indicia symbol for even numbered vertically stacked courses of the siding panels, wherein the first indicia symbol and the second indicia symbol are arranged in an alternating relationship horizontally along each of the siding panels. 15. The siding system as set forth in claim 14 wherein each of the plurality of siding panels includes indicia marking a plurality of panel alignment locations.