The specifications are as follows for (3” X10”) devices:
Dimensions:(LXWXH) 200X 70X 35 mm (7.8”X 2.7”X1.3”)
Airflow: 60 CFM at the default RPM, MAX:90CFM
Noise level: 33 dBA at default RPM
Cord length: 150 CM (6ft)
Power Supply: 12VDC 2.1X5mm (included in the packaging)
Material: Retardant Compound
Please note that in most cases, using the hanging brackets is not needed. They can be used only if the vent is too deep. But in the case of using them, 58mm (2.25”) will be added to the height of the device, and in total, 93mm (3.6”) clearance inside the duct is required.