Hoklartherm Gigant Retractable Roll-Up Shade Cloth for GreenhousesHoklartherm Gigant Retractable Roll Up Shade Cloth for Greenhouses Premium self retracting aluminized shade cloth curtains designed for Janssens and other greenhouses. These reflective interior shading systems reduce heat buildup, filter excess sunlight, and help protect plants from scorching while creating a cooler, more comfortable greenhouse environment. Available for roof and sidewall applications in multiple sizes and pull out lengths. Video