About Alcom

Alcom is one of Chicagoland’s leading window suppliers, offering cutting-edge, energy-efficient window and door products at all price points. The company’s experienced team has completed thousands of residential and commercial units since it was founded in 1970.

Meet the Team

Larry Ottenstein

Larry is the founder and President of Alcom. He has more than 47 years of industry experience and has successfully completed 1000’s of construction projects.

“Alcom’s promise to customers is uncompromising service, attention to detail and consistent performance. We are not a sub-contractor. We are a development partner,” said Larry. “Our business is built on repeat contracts from our existing network of leading builders across the country. Alcom’s deep experience and knowledge about windows and doors delivers tangible savings.

Alex Medor

Alex Medor has over 35 years of experience in the construction industry. He got his start in Overhead doors and as a union carpenter before beginning his 26 plus year career as a salesman with Alcom His client base over the years has included Lennar Homes, William Ryan Homes, Weis Construction, and McShane Construction. The projects he's handled range from 1000 sq. ft. starter homes to 12 story midrise and everything else in between.