Grower Select® Square Co-Extruded Standard Pot 4.5in - Square - Black - 1.25pt Capacity Standard thermoformed (vacuum formed) pot, economical for the greenhouse. Sturdy pots to fit grower needs. Square pots maximize bench and cart space. Custom fit to be a perfect match to the carry trays. Dimensions: 4.2in Diam x 3.62in H.