About The Item: [ Whats In The Box ] The Gz550 Blower Kit Includes All Of The Components You’ll Need To Successfully Install A Blower Into Your Fireplace For The First Time. Gz550 Fireplace Blower Kit Includes Blower, Galvanized Mounting Bracket, Wiring Harness, Rheostat Variable Speed Control, Magnetically Mounted Thermostat, 3-prong Power Cord, Installation Instructions [ Specifications ] Length X Width X Height (w/ Bracket): 12.75″ X 3.73″ X 3.23″, Length X Width X Height (w/o Bracket): 9.75.