You will need (1) 4” haven cap per (1) 4” x 4” post

deck or patio with these combination low voltage caps

Access your property quickly with Security+2

These 5” x 5” Neptune Downward Low Voltage LED Light Post Caps combine functionality

Motorized Integrated Barrier Gate Traffic Spike Solution; Corrosion Resistant (Flush Mount) Length:9 ft You will need (1) 4”Ideal for applications requiring a higher level of security and traffic control. Continuous duty DC motor with soft start stop operation for high capacity application needs. Battery backup ensures continued traffic flow even when power is out. Flush mount for lower profile (surface mount also available).