What Size Box ?

To ensure you select the correct size of container for your pet, please follow these guidelines. They relate to an animal standing in a natural position.

Measurements A, B, C and D for the largest animal should be used to determine the container dimensions.

Containers

The correct size of a container is essential. It must protect the animal during transport, be secure and have sufficient ventilation. If you do not meet the following requirements, the airline may refuse travel for your pet.
Container must be large enough for the pet to stand up, turn around and lie down in a natural manner. Your pet will be in the container for some time, therefore, it should be as comfortable as possible.
Container must be strong enough to protect the pet during transport, be secure enough to contain it and have sufficient ventilation on all four sides to ensure the air quality in the container will not deteriorate.
The door must be secured in such a manner that it will not open accidentally or your pet cannot open it during handling and transport.
Your pet's nose and paws should not be able to fit through any ventilation opening or door mesh.
The container must have a water pot accessible from outside.
The container should be constructed out of rigid plastic, wood, or a material of comparable strength. Fibreboard or wiremesh containers are not suitable for air transportation.
The International Air Transport Association (IATA) Live Animals Regulations contains detailed instructions on container constructions as well as the size and stocking densities.

Most pet stores and kennels sell containers or they can be made to measure to meet IATA specifications.