Grow It Seed Tray Lid Small is a clear, ridged propagator lid designed to fit over a standard half seed tray, creating a simple and effective propagator for germinating seeds and cuttings. Made from clear RPET plastic, it's easy to recycle at home through kerbside collections — a practical and environmentally responsible choice for gardeners.. Ridged design — adds extra sturdiness and maintains shape in use. Clear RPET plastic — recyclable at home through kerbside collection. Fits standard half seed trays — creates a propagator to retain warmth and moisture for seeds and cuttings. Compact size: H 8cm x W 23cm x D 18.5cm — ideal for windowsill propagation