Features: Powerful 12V inline duct fan delivers high speed airflows for efficient ventilation in tight spaces, suitable with solar panel via 5.5x2.1mm female input. Sturdy ABS plastic construction ensures long lasting performances, designed for continuous operation with low temperature rise and quiet efficiency. Ideal for homeowners, DIY enthusiasts, and hydroponic growers seeking reliable air circulation in grow tents, kitchens, or pet areas. Seamlessly integrates into ventilation systems for bathrooms, 3D printer enclosures, offices, or hydroponic setups to control humidity and air quality. Compact 12V blower with universal 5.5x2.1mm female port offers functional installation options for enhancing airflows in residential or hobbyist environments. Specifications: Material: Plastic Color: Black Style: A, D(Optional) Input Interfaces: 5.5x2.1mm/0.21x0.08inches Female (Inner Positive Electrode And Outer Negative Electrode) A-Style Size: 92x92x25mm/3.62x3.62x0.98inches, Pipe Diameter 90mm, Speed 2764rpm, 12v 2.7w Noise: 26db, Oil-Containing Bearing D Style Size: 145x60mm/5.71x2.36inches, Tube Diameter 110mm, Speed 1980rpm, 12v 3.5w Noise: 36db, Oil-Containing Bearing Package Includes: 1Pc 12V Exhaust Fan (Not Including Solar Panel) note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!