SI-Alu screen are made with special aluminum strips, polyester strips and high strength polyester yarn, having outstanding effect on radiation reflection and transmission. During the day, SI-Alu screens reflect sunlight to keep the greenhouse or garden center cool and avoid overheating of plants. During the night it helps to retain heat, maintaining a steady temperature and saving energy. The steadier temperature minimizes formation of dew on the crop, reducing the risk of fungal diseases. The unique knitted structure reduces condensation and allows them to be bundled to a small size for maximum available light.