- A P Glass Block
- A-1 Glass & Mirror
- All City Glass Block Windows
- American Glass Block
- American Glass Block & Vinyl
- Atlantic Glass Block Co
- Bill Nelson & Assoc
- Blocks & Bricks Inc
- Buffalo Glass Block Co
- Car Works Automotive
- Central New York Glassblock
- Custom Precision Technology
- D B Glass Inc
- D J's RPM
- D J's Tanning
- D J's Tree Svc
- D J's Wedding Svc
- D J's Westgate Beverage
- D K
- D K Architecs
- D K Assoc Inc
- D K Beauty Supplies
- Distribution Network
- East Side Glass Co Inc
- Embarrass Glass Block & Tile
- Empire Glass Block & Tile
- Enclosures By Distinctive Inc
- Glass Block Guys
- Glass Block Guys
- Glass Block Warehouse Inc
- Glass Masters Inc
- Glass Protection USA
- Hamburg Glass Block
- Independent Glass Block Inc
- Joe Reid Masonry Inc
- Kenny Walters Glass & Mirror
- Mac Pherson Glass
- Mackestrel Enterprises LLC
- Maryland Glass Block Inc
- Mayer Equity Inc
- National Glass Block Co
- Pittsburgh Corning Corp
- Queen City Glass Block Co
- Sidney Hutter Glass & Light
- Southend Glass & Mirror Inc
- Sullivan Glass Block & Masonry
- Syracuse Vitrablock
- Thomas Patti