Deckorators 4-in x 4-in Labyrinth Black Solar LED Cedar Deck Post CapAdds a nice ambient light to your deck, porch or fence Fits on a nominal 4 in x 4 in wood post Includes rechargeable battery No need for wiring or electricity, as this post cap is solar powered Easy to install on a wood post with an exterior construction adhesive Interior measurements are 3 5 8 in x 3 5 8 in Features Collection Name N A Mount Type Surface mount Power Source Solar Bulb(s) Included Yes Wattage 1 Number of Bulbs Required 2 Volts 1. 2 IPX