Description: This sturdy clear smooth skin ¼” (6.3mm) acrylic rack provides for ease of 100 mm Petri Dish storage at the bench or desk top. Each section holds 14 100mm Petri Dishes. Available in 4 or 7 section place holder. Dimensions: 4 place – 8.75 x 16 x 4.25” or 7 place- 8.75 x 28 x 4.25”.