About Us

Your Trusted Window Provider Since 1975

Since 1975, NBP has made energy-efficient windows and sliding doors in Philadelphia, PA. We’re a premium vinyl window manufacturer serving dealers and contractors in the Northeast, Southeast, and Midwest regions of the US.

NBP is making changes and investing in our future. We're more committed than ever to creating quality products and a positive customer experience.

Choose the window manufacturer with:

  • A convenient app that allows you to create a quote on-site instantly
  • Award-winning products
  • ENERGY STAR® Certified windows and doors
  • Fully experienced, quality-minded people
  • State-of-the-art manufacturing facilities
  • In-house testing labs
  • Certified product lines
  • World-class quality assurance processes
  • Support staff committed to your success
NBP Core Values Transparent

Our Mission

NBP’s ongoing mission is to create an exceptional experience for our customers, community, business partners, investors, and employees by manufacturing and distributing quality windows, sliding doors, and related products in a team-oriented organization built on our CORE values: Quality, Teamwork, Resolve, & Integrity.

The NBP Customer Experience

We’re dedicated to helping our dealers throughout the window-purchasing process. From manufacturing to sales and installation - we have you covered on all fronts.

  • 150,000 sq/ft manufacturing space allows us to keep up with customer demands and produces thousands of windows and doors a year
  • Continual investment and improvement of our business systems to create the best products and customer satisfaction
  • Use our accessible online portal, NBPconnect, to instantly generate quotes on-site
  • Product training and dedicated support contacts
  • Samples, displays, and sales support tools
  • Easy access to helpful materials like brochures, installation instructions, and care and maintenance documents for your customers

The Best Quality Products

We meticulously QA test during production. Our engineers rigorously test our products in a certified lab to verify that they meet the most stringent thermal and structural requirements.

This ability enables our customers to create custom product solutions with proven performance before items are shipped to the home or job site.

Our testing includes:

  • Design pressure testing (AAMA standards)
  • Air and water resistance
  • Multiple quality assurance checkpoints during production

Industry Leading Warranty

Pro Plus