Easy-to-assemble Staging-mill To Fit Burford 6x 6 Model Greenhouse. Made With Aluminium Slats So Air Can Circulate Around Them Easily & Allow Free-drainage After Watering Seeds Trays & Pots.with A Generous Depth Of 40cm (16in), You’ll Be Able To Fit A Double Row Of Trays For Seedlings & Young Plants To Bring On Earlier In The Season For Stronger Plants & Earlier Harvests.perfect For Housing Young Plants At A Height For Excellent Air-circulation, At A Height Further Away From Pests Like Slugs & Snails & A Height Convenient For You To Work From.the Strong Staging-mill Also means that you can Store Your Essential Tools, Seed Packets & Accessories Which Keeps Them Dry & All-together. please Note: This Product Will Only Fit Our 6ft Burford Greenhouses.