Deckorators 4-in x 4-in VersaCap Black Solar LED Plastic Deck Post Cap4x4 black solar band post cap for use on wood, composite and vinyl posts Includes 3 bracket inserts Adaptable to most posts ranging from 3. 5 in x 3. 5 in to 4. 625 in x 4. 625 in Solar powered so no need for electricity or wiring Features Collection Name N A Mount Type Surface mount Power Source Battery operated Bulb(s) Included Yes Wattage 1 Number of Bulbs Required 2 Volts 1. 2 IPX Rating 3 (spraying water) Fixture Length (Inches) 3 Fixture Height