WHO WE ARE

Definis and Sons is a family business established in 1959.
We are meticulous craftsmen offering Expert Installation of ...


Vinyl Replacement Windows Steel Entry Doors

Security Storm Doors Aluminum Storm Doors

Sliding Patio Doors Custom Designed Room Enclosures


NJ Contractors License Number 12VH00309900
PA Contractors License Number PA004268

Definis wins Dealer of the Year award!

Our Dealer of the Year represents outstanding examples of companies that are committed to customers, community and the health and strength of the window and door business.  We received many nominations and the winner was selected following extensive interviews with countless numbers of suppliers, customers and others.  Definis & Sons was chosen for its long-track record of leadership and innovation in serving homeowners in the greater Philadelphia market, as well as its overall reputation.

Once again, congratulations on Definis & Sons' achievement!


Sincerely,
Nicole Harris
Vice President and Publisher
Window & Door Magazine


Window and Door Magazine is the top trade magazine serving the window and door industry. Their headquarters are located in McLean, VA.

All of our products come with peace of mind, since we warrant and service everything we sell, which has led us to be able to furnish over 34,000 references.  In addition, we are able to offer you a free in-home estimate at a time that is convenient for you.  No obligation, of course, or we invite you to 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. 
Our reputation is second to none.
  


Home Builders Association
of Bucks/Montgomery Counties

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