These reusable trays are made from strong, rigid, high-impact plastic. 

Each tray measures approx. 9" x 15" (235mm x 380mm) and is designed to carry 15 - 2¾in x 2¾in x 3in deep (7cm x 7cm x 8cm) square pots.

These trays have been specially designed with raised drainage holes. So, when fitted with the square pots they will retain 1cm of water for the pot to rest in, with any excess water draining away.