• Height, overall: 5"
• Width, overall: about 4"
• Height between tabs (clearance for swivel): 3-1/4"
• Holes for vertical bolt: Cleared for 3/8" bolt
• Fasteners, holes: (8) Cleared for 1/4" screws
• Fastener spacing
    Vertically, lower and top hole to middle holes, center to center: 1-3/8"
    Vertically, middle hole to middle hole, center to center: 1-1/2"
    Horizontially, center to center: ~3-1/4"