Seves Glassblock
- Glass block manufacturers, glass block designs and finishes, galleries, technical outlines, FAQ and company information.
- http://www.sevesglassblock.com

Glassblock Warehouse Limited
- Suppliers of glass blocks, site includes product ranges, methods of construction and online ordering.
- http://www.glassblockwarehouse.co.uk

The Glass Block Place Inc
- Specializing in glass blocks. Servicing residential, commercial and industrial applications. Including windows, shower and panel kits.
- http://wvglassblock.com

Tafco Corporation
- Prefabricated glass block products. Products, retailers and about.
- http://tafcocorp.com/

International Product Supply
- Source for glass blocks. Products, photos and contact details.
- http://ipsglassblock.com

Pacific Accent
- Manufacturers of glass block window panels. Window type selection, price lists and sizing guides.
- http://www.pacificaccent.com/

Pittsburgh Corning
- Manufacturers of glass block and cellular glass insulation. Product selection, design and installation specifications, literature, galleries, FAQ, distributors, about and contact details.
- http://www.pittsburghcorning.com/

Weck Glashaus
- Offer a range of designs. Features design guide, catalog, and distributor locator.
- http://www.weck.com/