Features Gradually releases air freshener over 30 days. Environmentally friendly. Low voc 100% recyclable. Will not dissolve in or pollute water. Easy to use. Fits most standard toilets. Clips on outside of bowl. Shrinks to fit as fragrance evaporates. Cotton blossom Dimension - 18 x 12.5 x 9 in. Item weight - 1.6 lbs.