Featuring a 90-minute fire rating and impact resistance, the Clarity hollow glass block (6″x6″x4″) from the High Performance series offers maximum visibility and light transmission. The Clarity 6x6x4 90-Minute block combines safety, durability, and clarity in one premium option.
- Specs
- Mortar Accessories
- Resources
- Actual Size: 5-3/4" x 5-3/4"x 3-7/8"
- Weight: 5.5
- Approx. Installed Weight with mortar per ft²: 23.7
- Pieces per Square Foot: 4.00
- Heat Transmission U-Value (BTU/hr ft2 °F): 0.51
- Thermal Resistance R-value (hr ft2 °F/BTU): 1.96
- Privacy: Minimal
- Fire Rating: 90
- Visible Light Transmission: 70
- Shading Coefficient: 0.65
- Sound Transmission S.T.C.(dB): 48
- Solar Heat Gain Coefficient: .66-.68⁵
