The 360 Flat Rectangle Base can be fixed vertically, diagonally, or horizontally to any flat surface. Each base uses the universal AMPs hole spacing standard and will accept 10G or M5 countersunk fasteners.
2-Hole Base: 68.5mm (2.7")L x 28mm (1.1")W x 14mm (0.55")H; AMPS Hole Pitch: 48.5mm (1.9")
4-Hole Base: 58mm (2.3")L x 50mm (2")W x 14mm (0.55")H; AMPS Hole Pitch: 38mm (1.5") x 30mm (1.2")