Its main purpose is outdoor illumination. In addition, outdoor lighting increases the perimeter safety of a house. For illumination round the outside space, wall lights could be put 8-10 ft from one another. The recommended distance from the floor is about 5.5 ft (66 inches). It also perfect to affix them either side of the main door. In the event the general design requires only, it has to be set on the side where the keyhole is situated.
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