In meeting federal specifications, insulated units must have the following fire-resistant minimum ratings:
Posted: Fri Jul 22, 2022 11:17 am
In meeting federal specifications, insulated units must have the following fire-resistant minimum ratings:
A. Class 150: two hours
B. Class 150: four hours
C. Class 350: one hour
D. Class 350: three hours
E. Class 350: four hours
A. Class 150: two hours
B. Class 150: four hours
C. Class 350: one hour
D. Class 350: three hours
E. Class 350: four hours