The Onion design was used as an oil or candle lamp in ship's passageways and holds. Now used at doorways, on a post or hanging ( see wall or hanging category for those) and sends light all around and down to light steps. Photo shows Seeded Onion Wall, please check the Onion Post for configuration! Please see The Onion and Optic Onion for different glass. Have a question? Call us at 800-606-1612.