About Certified Builders

For over fourty years, Certified Builders Wholesale has been recognized as the top provider of windows, siding, entry and garage doors in Central PA. This reputation is built on a foundation of exceptional products, unparalleled product knowledge, reliable delivery, competitive pricing, and a commitment to exceptional customer service.

Founded in 1977

As Central PA's premier source for all your window and door needs, Certified takes pride in its ability to provide the highest quality products and expert advice to its valued customers.


As a family-owned business with a proud legacy, we are dedicated to providing our customers with exceptional products, unbeatable value, and unparalleled service. With over 40 years of experience and a long list of satisfied customers throughout Central PA, choosing Certified Building Products for your windows, siding, and doors is a decision you'll be glad you made. Trust us to provide you with the expertise, quality, and customer care you deserve.


At Certified Building Products, our highly skilled and knowledgeable staff is the cornerstone of our success. Our professional sales team boasts extensive experience and expertise, making them a reliable and trustworthy resource for all your needs. Whether you need help before or after your purchase, our team is dedicated to providing you with the solutions and support you need to make informed decisions and achieve the best results. Trust us to be your partner every step of the way.


Quality, value, and affordability are the hallmarks of our product selection. We have established strong partnerships with trusted and reputable manufacturers to provide our customers with the latest and most advanced technology in the window, siding, entry, and garage door industry. With over 35 years of experience, we are dedicated to delivering the best products and services in Central PA.


Founded in 1977, Certified Builders Wholesale has been serving Central PA out of the same location for over three decades. When you need us, we are easy to find.


We are committed to providing our customers with quality products, competitive prices, and the best value and service possible.


Step into Certified Building Products' expansive 3500 sq. ft. design center to find the best in windows, siding, and doors. Simplify your choices and see why our customers love us.