The Plantpak by Crest Windowsill Greenhouse Sets each comprise:1 x Drip Tray.5 x Individual 4 Cell Inserts.1 x Propagator Lid with ventilation. The sets are ideal for seeds and cuttings and enable easy plant removal. The integral drip trays avoid water spillage. The lids are shatter proof. Made from 100% recycled and recyclable material Dimensions: 54.2 x 15.7 x 7.2cm. Supplied in packs of 21 sets.