emsa part of the Addis Housewares group produce this amazing window box system under the myBOX brand. They consist of an outer container available in a choice of colours, a removable planting insert, and an integrated irrigation system.
'From trendy pink and green to sophisticated anthracite or brown, through to classic white – myBox has many faces: the contemporary-style window-boxes and planters are available in a choice of five colours and two sizes respectively. Mix 'n match frames, likewise in five contrasting shades, make the myBox system complete and allow up to 25 different combinations. So there is guaranteed to be something to suit every taste – from students to doctors or solicitors, up to and including design enthusiasts and devoted housewives. Having opted for the basic colour for the window-box or planter, customers can ring the changes by switching frames depending on their mood or the season, to give the balcony, kitchen or waiting room a fresh, new look whenever it takes their fancy. With so much individuality and flexibility to choose from, who can resist joining in.'
http://www.emsa.de/english/aktuelles_detail.php?news_id=64