High Performance Thickset Spray 60 is comprised of 4″ hollow block with thicker faces. This extends the fire rating to 60 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.
Faces are translucent and undistorted to transmit the most light and allow ultimate visibility.
Actual size of each block 7.75″ x 7.75″ x 3.75″