If you would like to install your Riga 3, 4, or 5 on a stem wall, this Door Extension Kit for Riga Greenhouses will help you. It allows you to raise the greenhouse by 20 inches and covers the space above the door when installing the door on ground level.

Features & Benefits

  • Anodized aluminum frame
  • 10mm UV-coated twin-wall Polycarbonate glazing
  • Reduces the need to construct a style to get over a raised door frame
  • Adds 20in to the standard Riga door