Chris Mosgeller

Chris has been in the window and door industry for over 12 years, during which time he specialized in residential replacement sales. A two time national award winning sales consultant, his knowledge and expertise is second to none in helping his customers identify the right products and the proper installation in order to turn their visions into reality. Born and raised in Buffalo, Chris is a UB business school graduate. He enjoys spending his free time with his wife and two children.

Andy Fuerstinger

Andy rejoined Big L in 2014, upon returning to Buffalo from California. He had been with Big L when he lived in Buffalo back in 2007. Andy has been in the construction industry for over 15 years and has been working exclusively with windows and doors for the past 10 years. His last 5 years has been spent working on high-end custom homes. Andy brings considerable expertise to Big L including expert knowledge of most major window and door brands including their traditional and contemporary styles. Born and raised in Los Angeles, California Andy now resides in buffalo with his wife of 8 years and 2 young children. His free time is spent with family, barbequing, or donating platelets at American Red Cross.

Xander Iliohan

Xander joins the Big L team with 13 years experience in the replacement window and door industry. The primary focus over those years has been sales of residential replacement projects, working with customers from their first consultation about windows and doors, to seeing their visions become a reality. His experience combined with his undergraduate studies in Architecture and Design, gives him a great set of tools to help with your window and door replacement projects. When he is not on the job, Xander enjoys spending his time with his wife and two children.

Tom Rauker

Tom joins us after more than 30 years in the Western New York fenestration industry, winning several local & national sales awards. He welcomes old & new friends alike to give him a call. Tom resides with his wife & daughter in the village of Hamburg.

Kevin McKenzie

Kevin originally joined the Big L team in our warehouse 15 years ago and recently rejoined Big L as part of our sales team. While working in the warehouse, Kevin developed a strong appreciation for the dedication to quality and customer satisfaction Big L has, which was ultimately what led him back us. Kevin attended the University at Buffalo and enjoys the outdoors as much as possible throughout our four seasons.

James Tronolone


As the newest member of the Big L sales team, James started in the window and door industry in the fall of 2011 as the assistant marketing manager with Modern Windows of NY Inc. By the end of 2012 he took over as their full-time marketing manager. In June 2015 James joined Big L as a retail sales consultant. Born and raised in Buffalo and a graduate of Canisius High School, James is a former college baseball player, having pitched for Niagara County Community College.

Steve Zwolinkiewicz

Steve joined Big L in April of 1981 as an assistant in the warehouse helping to load and unload trucks. Soon thereafter he assumed responsibility for the cash and carry counter where he acquired a great deal of product knowledge and worked with numerous contractors and tradesmen. After a few years, and with the knowledge he had acquired, Steve took an open position in contractor sales and proved to be an excellent resource for Big L’s trade customers. Steve’s 34 years of experience in the business, all with Big L, continues to prove to be of extraordinary value to both Big L and the customers he serves. Steve is a Buffalo native and has been married for 40 years. He has two children and two wonderful grandchildren.

John Ladowski

(716) 362-2449

John started installing storm windows and storm doors when he was 14 years old, and also installed one of the first vinyl replacement windows in Western New York. John is approaching the 30 year mark with Big L. John has expert knowledge of the Marvin family of products which enables him to find the right fit for any size window or door project, whether it’s new construction or remodeling. John is the proud grandfather of six beautiful grandchildren.

Dan Robinson

(716) 362-2446

Dan worked for Big L in the late 80’s and early 90’s during Big L’s early years and now he’s returned to the team after having his own window and door business for nearly 20 years. Dan has a lifetime of experience as a salesperson and installer in the window and door industry. Dan is a lifelong resident of South Buffalo and a true Irishman as is evident with his citizenship in both Ireland and the USA.

Travis Connors

(716) 362-2467

Travis joined the Big L team first as an installer, which gives him a great perspective as he inspects and assesses the windows in your home. Extensive knowledge of the installation side of the business enables him to recommend the best type of window or door installation, as well as the best type of product for each situation.

Fritz Cornell

(716) 362-2462

Fritz has been a part of the window industry for over 25 years, as an installer, union glazer, and sales consultant. He has come full circle with Big L, being a customer of ours for many years, and now an important part of our team. Fritz is an avid water sports enthusiast, enjoying boating, diving, and fishing during our beautiful Buffalo summers.