Company History

C&O Window and Door Company - Since 1956

C&O Window and Door Co., Inc. (C&O) was founded in 1956 by Angelo Coffee and Aldridge (Rose) O’Quin, in Pueblo, Colorado with the intent to manufacture and install aluminum storm windows. Aldridge acquired Angelo’s share of the business in 1963, however, the business name of C&O remained.


Aldridge and Rose were the principal owners and continued the manufacturing and installation of aluminum storm and sliding windows until Aldridge passed in 1977. Aldridge and Rose’s youngest son, Dennis, had been working in the business since the age of 16 and was pursuing a B.S. in Behavioral Science with a Minor in Psychology at the University of Southern Colorado at the time of Aldridge’s death. Dennis and his mother, Rose, decided to continue the business with the vision of expanding product lines and offerings with Andersen Windows and Doors in 1978.


Dennis purchased the business from Rose in 1983 and continued to grow and expand the business throughout Southern Colorado for both residential and commercial product and service offerings. Rose continued working in the business until she retired in 2006 at the age of 88.


Dennis O'Quin still owns and operates the business and brings with him over 46 years of industry experience along with a Class B General Contractors License. Dennis has built a reputation as being the premier glazing contractor, as well as the best commercial and residential window and door provider in Southern Colorado. C&O is considered a great employer in the community by treating their customers and employees with the up most integrity.


In April 1998, Dennis opened a new 9,000 sqft facility boasting one of the most extensive and best showrooms in all of Colorado. With over 3,000 sqft of showroom floor, customers have the ability to look at and operate every product line offered by C&O. 


Dennis’ youngest son, Nick O'Quin, joined the C&O team full-time in 2010 and is continuing the family legacy into a third generation of ownership. Nick graduated from CSU-Pueblo with a B.S. in Business Management and has over 15 years of construction related experience.

Meet Our Team