Base Dimension: 12 1/2 inches
Bolt Circle Diameter: 9 inches
Bolt Pattern: 4 Bolt
Height: 13 feet, 2 inches
Max Height: 20 feet
Spec for Northampton Aluminum 12" Base 4" 12 Flat Flute Shaft
Ordering sheet for Northampton Aluminum 12" Base 4" 12 Flat Flute Shaft