Graham Architectural Products (GAP) announced the additions of Martin Colby and Donna Tarcha, who were appointed sales representative and project manager, respectively.

Colby brings years of sales experience to GAP, most recently as a representative for Winco Windows in the Alabama market. He will be responsible for the Alabama and Mississippi fenestration markets and growing the company’s market share.

Tarcha, currently working out of GAP’s New Castle office, will relocate to the company’s York location later this year. She was a project manager at Traco for 13 years after spending her first two years with the company in customer service.