Containment systems and components for animal husbandry: rack module assembly method

1. A process for assembling a modular rack unit for containing rodent cages, which comprises:

providing an airflow unit, which airflow unit comprises a controller and an air pressure sensor or airflow sensor and which sensor is configured to send an air pressure signal or airflow signal directly to the controller; a connector joined to the airflow unit; and two or more rack unit modules, wherein each rack unit module comprises:

a first vertical side wall;

a second vertical side wall;

a front wall, wherein a first portion of a plurality of shelves are attached to the front wall;

a rear wall, wherein a second portion of a plurality of shelves are optionally attached to the rear wall;

wherein the front wall and rear wall extend vertically between the first and second vertical side wall; and

an air supply port and an air exhaust port at each of the shelves; and joining the two or more rack unit modules, wherein the rack modules are detachable and are effectively joined to the connector.

2. The process of claim 1 , wherein the connector is connected without a tool.

3. The process of claim 1 , wherein the airflow unit further comprises a blower.

4. The process of claim 1 , wherein the airflow unit further comprises a conduit, a filter, a heater, air cooler, humidifier, de-humidifier, a deodorizer or combination thereof.

5. The process of claim 1 , wherein the modules further comprise two or more sensors.

6. The process of claim 5 , wherein the sensor is in connection with a tube, a conduit, an air metering nozzle, a cage or combination thereof.

7. The process of claim 1 , wherein each of the shelves is configured to engage one or more rodent cages.

8. The process of claim 7 , wherein the airflow unit circulates filtered air into each cage.