About us. Invisible Windows Corp. is a professional window cleaning company in Berkshire County for the past 20 years. We are known for our professionalism and small crew. We are quick, clean, and efficient. The company has maintained a reputation of providing the best of the best in professional window cleaning in our area, sets us apart from the rest. Our work environment includes. On-the-job training. We are looking to add one person to the cr...
