The plastic petri dishes come in packs of 20 and are unopened, but the packaging has been roughed up. They have an inner diameter of about 80mm and can be used for a variety of material. They are in very good condition and being sold as-is. Approximate dimension of the bottom half outer diameter is 87mm and the height is 11mm. With both dish and lid assembled the approximate height is 21mm.
Dimensions (w/ Lid)
90mm (Diameter), ~20mm (Depth/Height)
Plastic Petri Dishes 80mm Diameter 20 Pack w/ Lids