Located in Newark, Delaware Window Supply is a full-service window and patio door supply company experienced in working with contractors and helping to meet the needs of homeowners throughout the Maryland/Delaware/Pennsylvania tri-state area to provide many custom vinyl window and door options. Our professional service and fast turn-around put us above the rest when it comes to delivering quality replacement windows that keep your project on time and within budget. Contact Us Today to learn about our wide range of products at the most competitive prices - and NO SALES TAX!

Choosing replacement windows requires serious consideration. Think about all the functions your windows must perform. Careful thought should be given to the types, styles, options, colors, glazing and manufacturers of your new windows and the warranty behind them. Our line represents the state-of-the-art design in windows. Using the latest computer technology, top industry engineers set out to design the perfect family of windows. As a result, we offer the most aesthetically contemporary and technologically advanced and energy efficient window systems in the industry.

What's new?

We are happy to report our lead times are coming down to an average 4-6 weeks. Not where we want to be, but as good… https://t.co/E8UDHpROMk

Posted on Feb 17, 2021  •  Twitter

Merry Christmas! https://t.co/rGBhYzBmRs

Posted on Dec 22, 2020  •  Twitter

SUMMER 2020 https://t.co/z7y1wNsYWX

Posted on May 29, 2020  •  Twitter

FALL IS THE TIME FOR WINDOWS https://t.co/wsAQ95UXUN

Posted on Aug 20, 2019  •  Twitter

Our office will be closing at 4:00pm Tuesday July 02 and will reopen at 7:30am on Monday July 08. Have a happy and… https://t.co/4QJNejhUGV

Posted on Jul 02, 2019  •  Twitter

How energy-efficient windows work...https://t.co/FWHLtj2eNr

Posted on Sep 19, 2018  •  Twitter

7 Reasons to buy vinyl windows...https://t.co/uHlApqIbwt

Posted on Feb 26, 2018  •  Twitter

*Blow Out Pricing* Anderson Silverline 1200 $124 (over 15 - $119) Anderson Silverline 8600 Energy Star $149 (over 15 - $144) Slocomb Earthwise 143 XXX/Argon $154 (over 15 - $149) Slocomb Pro Tech 177 XXX/Argon $174 (over 15 - $169) Slocomb Pro Tech 177 R-5 Ultraflex $184 (over 15 - $179)

Posted on Jun 13, 2014  •  Facebook

News from Delaware Window Supply http:// conta.cc/15aWsiH

Posted on Apr 15, 2013  •  Facebook

Spring Pricing and Promotion http:// conta.cc/1078MuZ

Posted on Mar 06, 2013  •  Facebook

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