Smooth, ball-bearing design, 115V input; includes hardware, cordFeaturing smooth, ball-bearing design, the 120V mount flush and comes in 4-1/2” model. Mounting hardware and cord included with each unit.4-1/2” fan rated 95 CFM at 39 dBASmooth, ball bearing design for extra quiet operationIncludes hardware and cordInput voltage 115VFan guards not included