The VegTrug Medium Cold Frame is manufactured from 100% FSC Certified Cedar Wood and excellent quality 3.5 mm polycarbonate for maximum insulation and great heat retaining qualities. Compatible with the Medium 1.8 m Classic VegTrug or can be used directly on the ground over a flower bed, the Cold Frame is perfect for keeping your plants warm in the colder months, providing the optimum growing conditions for an increased crop yield. The top-quality polycarbonate is safety and shatter proof, which means it is the most ideal and easy solution for covering your crops over winter. The Cold Frame also features a ventilation post, ensuring that your plants can breathe and grow naturally in the best conditions. Easily assembled from flat pack and features a fully opening lid, making watering and tending to your plants simple and fuss free, with no heavy lifting involved to remove the cover.