Regulation glass backboard for collegiate and high school competitionMounting bracket purchase may be requiredCompatible with Spalding Helix Height Adjuster Compatible with single mast ceiling suspended unitsGoal mounting pattern: 5 x 4 (411-007) 5 x 5 (411-008)Backboard mounting pattern: 36 x 63 (411-007 ) 42 x 68 (411-008)