DeFinis and Sons is a full line window and door company serving Eastern Pennsylvania and Southern New Jersey.  With over 50 years experience in custom window and door installation, no one comes close to our knowledge, expertise and service.



Visit Our Showroom!
Largest Window and Door Showroom in the Delaware Valley

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."


Visit our huge showroom!
Financing is available | 
Call Now: 215-624-7118 or 800-322-6177
Do you need professionally installed windows or doors?
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Visit Our Showroom
8312 State Road

Philadelphia, PA 
Monday - Friday: 10:00am - 4:30pm

Wednesday: 10:00am - 7:00pm

Saturday: 10:00am - 3:30pm, Sunday: Closed (Family Day)

(215) 624-7118 or 1-800-322-6177

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