Therma-Tru offers impact-rated doors and glass that can be used to meet high-wind and coastal region codes and regulations. These offer excellent performance in extreme weather conditions while providing added protection. All impact-rated doors pass a large missile impact test where Therma-Tru blasts a 9 pound 2” x 4’ stud into the doors at 34 mph to prove they are the better choice for strength. It is important when it comes to impact door usage that building code requirements are reviewed in the area of purchase to ensure all codes are met.
Wind-Borne Debris Region (WDBR)
WBDR doors are designed to withstand wind forces up to 167 mph and have a DP rating of DP-50. A WBDR door consists of a Structural Door plus an Impact glass lite insert. Only certain areas are able to pre-hang and certify a WBDR unit.
High Velocity Hurricane Zone (HVHZ)
HVHZ doors are designed to withstand wind forces up to 175 mph and have a DP rating of DP-55. A HVHZ door consists of an Impact Door plus an Impact glass lite insert. Only certain area are able to pre-hang and certify a unit as HVHZ.