WindowPRO is one of the Midwest’s leading specialty retailers of windows and doors. WindowPRO is headquartered in Wixom, Michigan and serves all of Southeast Michigan and Northwest Ohio. WindowPRO would rank as one of the nation’s largest specialty retailers of home improvement products when compared with Remodeling Magazine’s Top 500 companies.
The History of WindowPRO
WindowPRO officially becomes the world’s largest dealer of Infinity® from Marvin Replacement Windows.
WindowPRO won their first of multiple Window & Door Magazine, “Dealer of the Year” Award.
WindowPRO leaves Andersen to partner with Marvin Windows, becoming a dealer of all 3 Marvin product lines, including being Ohio’s exclusive dealer of Infinity® from Marvin Replacement Windows.
WindowPRO becomes Ohio’s largest dealer of Renewal by Anderson products.
John passes WindowPRO down to his son and our current president, Jake Zahnow.
First of many Angie’s List Super Service Awards.
Earns BBB A+ Rating as WindowPRO for the first time.
Weller Wilheim awarded one of first Renewal by Anderson dealership. Changed name to WindowPRO and shifted focus to only windows and doors.
Weller Wilhelm awarded wholesale Anderson Window Distributorship. Changes name to Weller Wilhelm Window & Door.
John Zahnow joins Weller Wilhelm as a salesman.
Art Weller retires, giving Herman Zahnow Jr. full ownership. Herman bought Bagley Rd. Lumber and moved Weller Wilhelm to its current location at 16900 Bagley Rd. in Middleburg Heights.
Herman Jr’s son, John Zahnow was born.
Weller Wilhelm Lumber opened in Cleveland, Ohio.
Herman’s son, Herman Willard Zahnow Jr., was born. Herman Jr. followed his father’s footsteps and began working at Saginaw Lumber, where he went from manufacturing parts, to assembling, to glass cutting, to eventually door-to-door selling, all specifically for windows and doors.
Christian’s son, Herman Willard Zahnow was born. Herman learned the logging industry from his father and went on to be the Vice President of Saginaw Lumber in Michigan.
Christian Frederick Zahnow immigrated from Germany to Saginaw, Michigan where he worked for years in the logging industry.