Keystone Window Mfg.

Window Manufacturer in Paterson, NJ. Pay Only 3% Sales Tax. Commercial & Residential Windows, Storefronts & Insulated Glass.
Opening at 8:00 AM
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We manufacture/install partitions to limit face to face exposure between your employees and customers. Glass and Plexi-glass glass options are available.


2 years ago
They make a very solid window. As a window installer Ive seen a lot of window makers using thinner aluminum and skimping on product quality. Keystone is my new supplier. Superior product, great prices, great warranty and last but not least excellent customer service. The office staff is great and kept me updated on my orders.
- Todd P
a year ago
I had a great experience with them. Quick and easy install. Price was better than 3 other companies. Customer service was excellent. I would highly recommend them!!!
- Frank L
a year ago
Keystone windows were installed in my apartment a few days ago and they're great! These windows basically soundproofed my apartment, and my apartment is so much warmer now. I had to call my landlord today to ask him to lower the heat. Awesome windows!
- Frederick R

Contact Us


Call now
  • (973) 433-0683
  • (718) 885-4935


Get directions
101 2nd Ave
Paterson, NJ 07514
United States

Business Hours

Mon:8:00 AM – 4:30 PM
Tue:8:00 AM – 4:30 PM
Wed:8:00 AM – 4:30 PM
Thu:8:00 AM – 4:30 PM
Fri:8:00 AM – 4:00 PM
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