Tough, finest top quality seed trays that will give you years of good service. Now (bar quarter size) with strong rims for extra rigidity & enhanced 2 tier drainage. Windowsill size Trays: 37 x 13.5 x 6cm (141/2 x 51/4 x 21/4"). PLUS Clear, lightweight propagator lids to enhance the growing environment! Windowsill size Propagator Lids: 37 x 13.5 x 12.5cm (141/2 x 51/4 x 5"). PACK of 10.