FRENCH GARDENIA Birds on a Branch Veranda Zodax Porcelain Diffuser Porcelain Diffuser dimensions are about 7" tall Gift box dimensions are about 4.25" x 8.5" Comes with 80 ml of fragrance. Allow 24 to 36 hours for full fragrance effect. Do not place porcelain diffuser on furniture or counter top without a protective tray. Refills are available.