F25 Extra Deep Tray Sunshine Yellow-(ELS-SED11062) offers a thoughtfully designed, durable resource for hands-on learning. Gratnells F25 Extra Deep Tray Sunshine Yellow. The world's best. selling school tray BSI tested and passed for heavy educational use All trays fit standard school furniture Lids and inserts also available Dimensions. 427 x 312 x 225mm (l x w x h).