Keep out dust and debris while reducing heat build-up. Easily installs in knock-outs and ventilation openings using included hardware for optimum exhaust applications. 4-1/2 diameter fan with 5-blade impeller includes chrome plated spiral wire safety guards on one side. Includes 5′ length, 3-conductor 115V power cord. 88.1 CFM. Overall dimensions: 4-3/4 x 4-3/4 x 1-3/4 thick. Order one fan for each upper, lower and side car compartment.