Size: L 18.5 cm x W 15.5 cm x D 6 cmThe Cage/Crate Cooling Fan Attaches to most cages, crates or pet carriers. It has been designed to provide pets with a powerful airflow to keep them cool and comfortable. The Cooling Fan has two operating speeds and is ultra quiet. The Cooling Fan runs on 2 x D" size batteries (not included) and will provide your pet with up to 100 hours of cooling relief.
Unfortunately, it hardly generates any sufficient flow; which is very weak (despite good batteries) & it is totally useless when needed most - in hot weather - resorting to an easy installation of $20 fantastic dual fan from RTM shop. Far more efficient & cheaper.