| Standard Series |
| Type
I |
- Brilliant Clear White Glass Block
- Unique and Handcrafted Product
- Largest Selection of Colored Block
- Corners and Ends
- Metric Sizes
- Made in Italy
|
 |
| Type
II |
- Green Tinted Glass Block
- Imperial and Metric Sizes
- Corners and Endblock
- Made in Germany
|
 |
| Type
III |
- Light Green Hue Glass Block
- Largest Selection of Architectural Block
- Largest Selection of Corners and Endblock
- Accessories/Special Fire-Rated/Solid Glass Block
- Imperial Sizes
- Made in the U.S.A.
|
 |
| Type
IV |
- Light Green Hue Glass Block
- Large Selection of Patterns and Colors
- Custom Order Corners for Patterns
- Imperial and Metric Sizes
- Made in Germany
|

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| Type V |
- Light Green Hue Glass Block
- Corners
- Japan
|
|
| Type
VI |
- Clear White Glass Block
- Lowest Prices
- Varies in Color Hue and Quality
- Imperial and Metric Sizes
- Made in Asia/Indonesia
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