Glass Block

usblock-windows

Glass block

Glass block windows are available in picture style only. The unique feature of these windows is that they arrive complete ready to install.

Downloadable:

Glass Block Comparison .xls

Insulative Values

The insulative value of the glass block approximates zero while the acrylic blocks may be Energy Star Rated. Review the insulative block criteria chart.

Energy Star

The windows that conform to the energy star requirements are noted on the insualtive chart. Information about energy star ratings may be obtained from (www.energystar.gov/index.cfm?fuseaction=find_a_product),