Takes trees up to 8’ (2.4m) high and trunk diameter of up to 5.5” (14cm) with an overall base diameter of 16” (40cm), 4.75ltr reservoir. Designed for commercial use. Made from a very durable plastic material. They have a large tree trunk access and a larger water reservoir capacity. Only 5” (12cm) of clear trunk is required to hold the tree in place.