MOROCCAN Metal Pluggable Fragrance Warmer Gift Set with Courtneys Wax Melt Note that wax color will vary depending on the scent selected. Decorative pluggable fragrance warmers warm scented oils or scented wax creating the glow and ambiance of a burning candle while releasing fragrance into your home or office. Pluggable Warmers are ideal for relatively small rooms or spaces. Pluggable Scent Warmers use a night light bulb (included) to warm up the scented oil or scented wax chips or tart you place in the top tray. About 5 inches tall. Replacement NP7 light bulbs sold separately.