The Paterson Developing Tray is constructed of a hard durable, chemical resistant plastic, and is available for all popular print sizes. This is a single grey tray that is 5″ x 7″ (12.7cm x 17.8cm) in dimension. The colour of the tray help differentiate between chemicals under safelight conditions. The base design of the tray gives maximum economy of solution and easy print removal, with a convenient pouring lip for drip-free emptying. The tray is also stackable for easy storage.