USI 90 is a unique core blank made from multi-layered dense particleboard board pressed with adhesive. It is engineered to resist fire and acoustic proof, designed for door/shutter assemblies in different configurations.
Three layered particle board composed of hardwood particles taken from sawmill, joinery residues bonded with compatible adhesive agent, additives and solvents.
Approved Integrity and Insulation 90 min
Up to 45 STC
Compatable for all doors configurations
I-LISTING, IPS Certification Services