Mouse Pie Cages - easy to clean and to use. Circular cages hold up to 11 mice for whole body irradiation. Notched removable lid can be dialed to any of the ventilated pie-shaped chambers. Also use for temporary transport or storage of animals for acute studies. Dimensions of the cage: 21.5cm Dia x 7.5cm H. Cage has 11 usable sections and one for loading, individual chambers are approximately 5 cm (base) and 9 cm (length).