High Performance Thickset Endura 90 is comprised of 4″ hollow block with thicker faces. This extends the fire rating to 90 minutes when used as window assemblies within fire rated walls. Increasing the face thickness allows for higher levels of safety, security, and reduced sound transmission is used in buildings designed for public use; hotels, schools, nursing homes, restaurants, cinemas, etc., and in buildings where flammable or combustible materials are stored and/or handled.
Endura pattern’s narrow flutes provide moderate light transmission and maximum privacy.
Actual size of each block 7 3/4″ x 7 3/4″ x 3 7/8″.