Our showroom features a huge selection of full-size windows and doors.

As you can see, DeFinis and Sons offers you more than just windows. We offer you a way to make your home uniquely yours, like no other home in your neighborhood. YOU BE THE ARTIST! We warrant and service everything we sell, which has led us to be able to furnish over 42,000 references. In addition, we offer free in-home estimates, at a time that's convenient for you, or visit our huge, colorful showroom. Taking pride in our work has led us to grow and become the largest Window & Door installation company in the Delaware Valley, and our reputation is second to none. "We Guarantee It."