This is polycarbonate end walls for hobby style greenhouses come in a variety of sizes to fit most greenhouses.  They are made of corrugated polycarbonate and are clear for easy viewing without opening your doors.  The polycarbonate end walls for hobby style greenhouses come in a variety of sizes to fit most greenhouses. They are made of corrugated polycarbonate and are clear for easy viewing without opening your doors. They are made to cover both ends of the greenhouse. Corrugated Polycarbonate panels to enclose both Cold Frame or Ranger Series endwalls. Includes the necessary fasteners and panels.made to cover both ends of the greenhouse. Corrugated Polycarbonate panels to enclose both Cold Frame or Ranger Series endwalls. Includes the necessary fasteners and panels.