Dimensions – 21.65″ wide x 47.24″ long x 1.57″ deep Made from durable recycled polypropylene Internal capacity of about 7.4 gallons This tray has proved popular when used by private and commercial gardeners alike as a large irrigation table for keeping a multitude of potted plants watered. The tray can be filled with grit or capillary matting if preferred. Its sheer size means that by simply filling the tray with a depth of water a large number of plants can be watered in minimal time. The internal capacity is 28 liters about 7.4 gallons. A series of shallow horizontal ridges on the internal base of the tray aid in drainage. The tray will fit perfectly on most greenhouse staging.