503034 Backboard: 503034 A0267 72" x 42" Rectangular Steel Backboard with border and target Constructed of one-piece 12 ga. steel reinforced with formed steel channel sections at goal and mounting points. Fisihed with primer and two coats of outdoor white enamel. 503033 72" x 42" Rectangular Perforated Steel Backboard Ideal for windy areas. The 11-guage steel skin is perforated with 1/4" holes in a pattern to form border and target. Backboard includes a steel sub-frame for added strength. Not for use with 3-1/2" or 4-1/2" OD posts. 503035 54" x 42" Rectangular Polycarbonate Backboard Gives the look of glass but constructed with 1/2" clear polycarbonate and framed with aluminum extrusions and steel corner brackets. Includes a steel sub-frame for added strength. White border and target. Not for use with 3-1/2" OD posts. 503034 72" x 42" Rectangular Polycarbonate Backboard This backboard features the same construction as the 503035 but in a larger competition size. Not for use with 3-1/2" or 4-1/2" OD posts. Dimensions: -Glass: 0.5". -Holes Pattern: 0.25". -42" H x 54" W. -42" H x 72" W.