The exposure chamber for rat cages 28 x 24 x 24 inches (71x61x61 cm) will fit 4 rat cages (19×10.5×8.5 in).

The picture shows two units placed together with locking wheels. Doors are removable and held on with 8 cam lock fasteners and sealed with closed pore gasket material.

The flow through the chambers is from side to side using holes in pipe designed to mix the smoke throughout the chamber. Minimum flow rate is 66 LPM for 15 changes-per-hour.