The Plastic Root Trainers are an excellent solution for growing plants with well-developed root systems. These trainers are designed to provide ample space for the roots to grow and expand, ensuring that they are healthy and strong. The trainers are made of high-quality plastic, which makes them sturdy and durable. The trainers come in a large greenhouse size, making them suitable for commercial as well as personal use. The trainers are equipped with an air cooling system that maintains the temperature inside the trainers and prevents the plants from overheating. The film thickness of the trainers is 320 mmX 250 mm, which provides sufficient insulation to the plants and ensures that they stay warm and protected. The monitoring system of the trainers is manual, which makes it easy to keep track of the plants' growth. These Plastic Root Trainers are perfect for growers who want to ensure that their plants have healthy root systems. They are easy to use and provide excellent results. Whether you are a professional grower or a hobbyist, these trainers are a great investment.