About this item: 【Material】Fabricated out of premium iron and construction strengthened by screws ensure its working longevity. 【Feature】This inline duct fan is engineered to boost air in forced air heating and cooling systems without upsetting the balance in the closed loop system. 【Minimize Noise】The balanced blades design for minimize noise and vibration. the Motor with permanently lubricated bearing operates quietly. 【Easy to install】Fluted on both ends to receive ducting. portable and lightweight and can be installed anywhere. 【Compatibility】This fan suit for various environment such as work shops, indoor growing rooms, warehouses and so on. it is ideal for boosting supply air, return air and venting. .