These Pet Crate Fans provide a refreshing airflow for pets wherever they travel, or while at home. Retractable grip allows the fan to be hung on a cage, crate or pet carrier. Fans circulate the air, removing warm air from the cage interior, and can help to protect pet from overheating. Quiet, two-speed operation will not disturb pets Includes a built-in thermometer to measure ambient temperature Features a port to accommodate an AC/DC adapter (not included) Available in 1, 2, 3, 4 or a money saving set of 5 fans. Additional Details ------------------------------ Product description: These Pet Crate Fans provide a refreshing airflow for pets wherever they travel, or while at home. Retractable grip allows the fan to be hung on a cage, crate or pet carrier. Fans circulate the air, removing warm air from the cage interior, and can help to protect pet from overheating. Quiet, two-speed operation will not disturb pets Includes a built-in thermometer to measure ambient temperature Features a port to accommodate an AC/DC adapter (not included) Available in 1, 2, 3, 4 or a money saving set of 5 fans.