The deluxe model 1300mm high so you don't bump your head. It gives space for tomatoes or climbers. Cover with our bird mesh (5 m x 5 m) or our insect screen. You can add plastic coated wire trellis along one long side (sold separately). If retro-fitting you will need an electric drill and a 10mm bit. Order the Large for my Large Slim, Extra Large & Jumbo Beds and order the Small for the Herb & Space Saver.