DescriptionThis furnace DC cooling fan is made of premium material, which can withstand long-lasting use. Features the PBT material, which has high durability, not easy to deform. Fine workmanship, ensures practicality.Features-Color: As shown -Material: PBT -Size: 9.70X9.70X3.00cm/ 3.81X3.81X1.18in - Number of rotation: 4500RPM - Air volume:42.8CFM - W ind pressure: 62.4 mmh2o - Service life: 10.0000 hours (at 25, 4585% relative humidity environment) - Noise level: up to 65.6dB - It is manufactured with professional technology to ensure the high-quality of the product and can work for a long time. - Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience. - Ultra-long service life, with sufficient heat dissipation air volume and air pressure. - Red line is positive pole and black line is negative pole, these two wires can be connected and used. - Maintenance-free double ball bearings, saving your time and effort in maintenance.