Other Key Features Attaches to Balcony Railings. Includes Brackets. Black Alloy Shelf. For those who haven't got a garden to call their own, but still wish to tend to their own plants, fruit and vegetables, this innovative greenhouse could be perfect for you! The Balcony Greenhouse has been designed specifically to attach to balcony railings, giving you a mini greenhouse to place plants into. All of the required brackets and fittings to enable it to attach to your metal work is included with the purchase.  A sliding glass door gives you access inside, whilst a cedar and back alloy shelf give you space to place your pots on. Both are removable should you have taller plants you wish to place inside.  For safety, each of the panels used throughout the product is made up of 4mm toughened safety glass.   Height (mm) Width (mm) Depth (mm) External 790 600 270 Height to Eaves: 740mm.